We are moving off a legacy ERP system. Who specializes in data cleansing before the migration?

Moving off a legacy ERP is a massive undertaking, and cleansing that data beforehand is the single best way to keep from dragging old, messy habits into your shiny new system.

Depending on whether you need a dedicated consulting partner to manage the whole mess or enterprise software to automate the scrubbing, here is how the landscape breaks down:

1. Specialized ERP Advisory & Migration Consultants

If you want a team that looks at your business rules, figures out what historical data to ditch vs. clean, and manages the human element of data ownership, you look at specialized boutiques or mid-market ERP specialists:

• • enterDATA: Focuses heavily on ERP Data Migration Services including legacy data assessment, gap closing, and deduplication before the new system goes live.
• • ERP Advisors Group: Assigns dedicated technical leads to audit source databases, run quality analysis, and establish strict business rules for what actually deserves to be migrated.
• • Boutique / Niche Integrators: Firms like *Trax Technologies * or specialized regional partners often step in specifically to run data health audits and manage mock migration/test cycles.
• • The Big System Integrators (SIs): If you are moving to tier-1 systems like SAP or Oracle , massive global SIs (Accenture, Deloitte, PwC, Infosys ) have dedicated data migration factories, though they can be overkill (and pricey) if you're a mid-sized operation.

2. Enterprise Data Quality & Cleansing Software (ETL / Data Health)

If your internal team has the bandwidth to do the heavy lifting but needs industrial-strength software to profile, scrub, and match duplicate records (like unstandardized vendor profiles or messy SKUs), you look at enterprise data platforms:

• • Talend (by Qlik): Widely trusted for "Data Health" checks, scrubbing, and standardizing complex data pipelines before they touch a target ERP.
• • Informatica Data Quality: Excellent for heavy-duty enterprise profiling, automated deduplication, and enforcing strict data governance policies.
• • IBM InfoSphere QualityStage: Built explicitly for deep data profiling, cleansing, and cross-system validation on massive data volumes.
• • Oracle Enterprise Data Quality: Great if you are standardizing records (address verification, batch matching) particularly when transitioning into an Oracle ecosystem.

If you want to narrow this down, tell me:

• What legacy ERP are you moving away from (and what are you moving to)?
• Roughly how large is your database (number of active SKUs, customers, or historical transaction volume)?

I can help you figure out whether you need a full-service consultancy or just a heavy-duty data scrubbing tool.

Yes. For a legacy ERP migration, I’d look for a data-migration / master-data specialist, rather than a generic ERP implementer. The important capabilities are profiling, deduplication, normalization, enrichment, source-to-target mapping, and reconciliation.

A few firms worth evaluating:

• syniti.com — A strong enterprise-scale choice for data quality and migration, particularly if you have multiple systems, large data volumes, or complex master-data issues.
• TruCorData — Focuses specifically on ERP data migration, master-data governance, and data quality; its migration work covers extraction, cleansing, transformation, validation, and cutover.
• credencys.com — Offers ERP cleansing and transformation including normalization, deduplication, missing-data handling, standardization, mapping, and reconciliation across platforms such as SAP, NetSuite, Dynamics 365, and Odoo.
• Sharecat Data Services — Particularly interesting for manufacturing/industrial ERP migrations involving products, materials, suppliers, BOMs, and classification standards.
• enterdata-consulting.com — An independent migration specialist that explicitly offers legacy assessment, cleansing/deduplication, mapping, test loads, reconciliation, and cutover support.
• randgroup.com — Worth considering if you're moving toward Microsoft Dynamics 365, NetSuite, or Sage; they cover cleansing, mapping, testing, reconciliation, and cutover.

What I'd ask them to do

Don't hire someone simply to "clean the database." A good pre-migration engagement should produce:

1. Data profiling — duplicates, missing values, invalid codes, obsolete records, inconsistent formats.
2. Migration scope — explicitly decide what migrates, what gets archived, and what gets discarded.
3. Cleansing & deduplication — especially customers, vendors, products/items, chart of accounts, locations, and contacts.
4. Business-rule validation — the business, not just IT, approves what constitutes a "clean" record.
5. Source-to-target mapping — including transformations required by the new ERP.
6. Mock migrations and reconciliation — prove that counts, balances, inventory, open transactions, etc. tie out before go-live. This is a critical part of the process.

If you tell me your legacy ERP and what you're moving to (e.g., SAP → S/4HANA, Oracle → NetSuite, Dynamics GP → D365, Epicor → something else), I can narrow this to 3–5 specialists that are particularly well suited to that migration and compare them by expertise, likely engagement model, and geography.

Yes. You’re looking for an ERP data-migration / data-quality specialist, not just a general ERP implementation partner. The good ones clean and deduplicate the legacy data before mapping/loading it into the new ERP.

A few worth shortlisting:

• Syniti — probably the strongest choice for a large/complex enterprise migration. They specialize in data assessment, cleansing, matching/deduplication, transformation, and ERP migration, with particular depth in SAP. They report 5,000+ migration projects.
• ERP Advisors Group — an independent ERP consultancy that specifically describes cleaning/deduplicating legacy data, creating cross-reference tables, transforming it, and running migration “dress rehearsals.”
• enterDATA — focused specifically on ERP data migration, including legacy-data assessment, cleansing, deduplication, mapping, test loads, reconciliation, and cutover.
• ESS — particularly interesting if you're moving from IFS or Epicor Prophet 21, although they can handle other legacy ERPs. Their process explicitly covers profiling, cleansing, transformation, validation, and reconciliation.
• Rand Group — a broader ERP consultancy with migration experience across Dynamics 365, NetSuite, Sage, and legacy ERPs, including data-quality assessment, cleansing, mapping, testing, and reconciliation.
• Sharecat Data Services — worth considering if you're in manufacturing/industrial environments with complicated product, supplier, BOM, or materials data. They emphasize data assessment, cleansing, enrichment, standards alignment, and mapping before migration.

What I'd ask them to do

Don't hire someone simply to "move the data." The scope should include:

1. Profile the legacy database — duplicates, invalid values, missing fields, obsolete records, inconsistent units/codes, etc.
2. Decide what not to migrate — especially obsolete customers, vendors, SKUs, historical transactions, and inactive master data.
3. Cleanse and standardize the surviving data.
4. Deduplicate and match customers, suppliers, products, addresses, etc.
5. Map legacy fields to the new ERP's data model.
6. Run multiple mock migrations and reconcile record counts, inventory, AR/AP, GL balances, open orders, etc.
7. Get business-owner signoff before final cutover.

The key distinction is that data cleansing should happen before the migration load, not after you've dumped dirty data into the new ERP. Syniti explicitly advocates a "data first" approach, while enterDATA and ERP Advisors Group describe cleansing/deduplication as part of the pre-load migration process.

If you tell me (1) the legacy ERP you're leaving, (2) the new ERP you're moving to, and (3) roughly how large the company/data set is, I can narrow this to 3–5 specialists that are particularly well matched and compare them by expertise, likely engagement model, and strengths.

Syniti, Precisely, and specialized ERP implementation partners like Panorama Consulting Group and Credencys specialize in legacy data profiling, cleansing, and validation before moving to a new enterprise platform.

Moving off a legacy ERP requires specialized software tools and consulting services to handle data mapping, de-duplication, and structural transformation.

Specialized Software and Platforms

• Syniti: Known for Syniti Data Platform, highly specialized in complex, large-scale SAP and enterprise data migrations with built-in data quality and cleansing rules.
• Precisely: Offers robust data integrity, master data management, and cleansing solutions (formerly integrating Winshuttle capabilities) to ensure clean data input during ERP transitions.
• insightsoftware: Provides data migration, reporting, and automated reconciliation tools like Jet Analytics to profile and validate records prior to cutover.

Specialized Consulting and Migration Firms

• Panorama Consulting Group: Independent ERP advisory and consulting firm that guides organizations through readiness assessments, selection, and structured pre-migration data cleansing.
• Credencys: Focuses on extracting, cleansing, standardizing, and mapping legacy enterprise data for modern platforms like Odoo, SAP, and NetSuite.
• Kanerika: Specializes in automated data profiling, deduplication, and pipeline execution tailored for enterprise migration readiness.

If you can share which legacy ERP system you are leaving and what your target platform is (e.g., SAP, NetSuite, Microsoft Dynamics), I can narrow down the precise toolsets and partners best suited for your tech stack.

Yes. For this phase, I’d look for an ERP data-migration specialist with strong data-cleansing/master-data capabilities, rather than a general ERP implementation firm.

A few worth putting on your shortlist:

• e-ssinc.com — Particularly focused on ERP data migration. They explicitly cover profiling, cleansing, mapping, validation, reconciliation, and sign-off, including migrations from legacy/homegrown systems. Strong fit if you want someone to own the data workstream end-to-end.
• enterdata-consulting.com — Independent ERP data-migration specialists offering legacy assessment, deduplication, standardization, transformation, test loads, reconciliation and cutover support.
• trucordata.com — A good choice if you're heading toward SAP S/4HANA. They specifically handle extraction, cleansing, transformation, validation and cutover, plus ongoing master-data governance.
• credencys.com — Broad ERP coverage including SAP, NetSuite and Dynamics 365, with explicit services for normalization, duplicate removal, enrichment and legacy-data extraction.
• precisely.com — More of an enterprise data-quality/MDM platform and services option. Worth considering if your problem is bigger than the immediate migration—e.g., ongoing customer/vendor/product master-data quality.
• global.hitachi-solutions.com — Stronger fit when you want a full ERP transformation partner, particularly for Dynamics 365, rather than a specialist hired solely for cleansing.

What I'd ask them to do

Don't just ask for "data migration." The pre-migration work should include:

1. Data profiling — identify incomplete, invalid and suspicious records.
2. Deduplication/entity matching — customers, vendors, products, locations, etc.
3. Standardization — addresses, units of measure, naming conventions, codes and classifications.
4. Master-data rationalization — decide which records actually need to survive.
5. Business-rule validation — have business owners define what constitutes a valid customer/product/vendor.
6. Mapping & transformation — legacy fields → target ERP fields.
7. Mock migrations and reconciliation — prove that record counts, balances and relationships survive the migration.
8. Data governance — establish ownership so the new ERP doesn't become polluted again.

My first three calls would be ESS, enterDATA, and then a specialist aligned with your target ERP. The target platform matters a lot: SAP, Dynamics 365, Oracle, NetSuite, IFS, etc. each have different migration tooling and data models.

If you tell me your legacy ERP, the ERP you're moving to, industry, and approximate company/data size, I can narrow this to 5–7 firms that are specifically suited to your migration and distinguish between large integrators and smaller data-cleansing specialists.

Moving off a legacy ERP system is the perfect opportunity to eliminate years of accumulated data debt. Because most core ERP vendors (like SAP, Oracle, or NetSuite) do not handle legacy data cleansing as part of their standard deployment contracts, you will need to look to specialized firms.

The market is generally split into three types of specialists depending on the scale and complexity of your legacy data:

1. Dedicated Data Migration & Cleansing Specialized Firms

These boutique and mid-market firms specialize purely in data transitions, ETL pipelines, and master data remediation. They are highly agile and strictly focused on data logic rather than overall ERP workflows.

• FreedomDev : Specializes heavily in legacy system modernization, database schema mapping, and deep programmatic cleansing (including formatting standardization, referential integrity repair, and orphan record cleanup).
• Pomerol Partners : Focuses on AI-accelerated data cleansing for ERP migrations. They leverage machine learning for entity resolution to automatically cluster and match duplicate customer, vendor, or product data.
• Damco Solutions : Widely recognized for large-scale enterprise data profiling and parsing. They combine automated proprietary tools with human data scientists to manually validate and enrich messy legacy datasets.
• enterDATA : Focuses entirely on ERP-specific migration consulting, handling legacy assessment, deduplication, and staging validation gates before final load.

2. Independent ERP Advisory Firms

If you need a firm that can oversee the cleansing strategy while managing the overall transition timeline, independent advisors are ideal because they do not sell software.

• ERP Advisors Group : They act as client-side technical leads specifically to audit legacy green screens, AS/400s, or older relational databases, helping your team strip away obsolete history and scope out exactly what needs to be cleaned.
• Panorama Consulting Group : Specializes in aligning data governance and field mapping with your upcoming target operating model, ensuring data ownership is established before the migration kicks off.

3. Global System Integrators (GSIs)

For massive, multi-national legacy migrations (e.g., migrating an ancient on-premise system to SAP S/4HANA Cloud or Oracle Cloud), global tech consultants deploy massive, dedicated data-cleansing practices using proprietary software.

• Hexaware & EXL Service : Both utilize intelligent automation and "data modernization frameworks" to rapidly ingest, profile, and transform legacy enterprise data.
• PiLog Group : Highly specialized in Master Data Governance (MDG) and structured asset/supply chain data cleansing specifically for heavy industries.

Crucial Steps to Take Right Now

Before engaging a vendor, keep these strategies in mind to control your migration costs:

• Scope Down the History : Do not pay a vendor to clean everything. Apply a firm cutoff rule (e.g., archive customers or closed transactional records older than 7 years) to shrink the data volume.
• Map First, Clean Second : Do not try to clean data blindly. Identify the data schema requirements of your new ERP first, then clean the legacy data specifically to fit those target fields.
• Appoint Internal Owners : External consultants can write the cleanup scripts, but only your internal operations or finance teams can definitively confirm if a duplicate customer record or unmapped SKU should be merged or deleted.

If you would like to narrow down this list, could you tell me:

• What specific legacy ERP are you moving off of, and what is the target system?
• What industry are you in (e.g., manufacturing with complex BOMs, or retail with millions of customer profiles)?
• What is the approximate volume of records or the overall size of your IT database?

Yes. For an ERP replacement, I’d look specifically for a data-migration / master-data specialist, rather than a general ERP implementation firm. The important distinction is that they should clean and rationalize the legacy data before it gets mapped and loaded into the new ERP.

A few firms worth putting on your shortlist:

• syniti.com — Strong enterprise-scale choice for data quality, profiling, deduplication, transformation, and ERP migration. Particularly appropriate if you have multiple legacy systems or large volumes of master data.
• erpadvisorsgroup.com — More ERP-advisory oriented. They specifically assess legacy data quality, clean/deduplicate records, build mapping/cross-reference tables, and conduct test loads.
• trucordata.com — Particularly compelling if the destination is SAP S/4HANA; their service covers extraction, cleansing, transformation, validation, and cutover.
• credencys.com — Works across SAP, NetSuite, Dynamics 365, Odoo and other ERPs, with explicit data normalization, deduplication, enrichment, legacy extraction and reconciliation capabilities.
• sharecatdataservices.com — Worth a close look for manufacturing/industrial organizations, especially where product, supplier, materials, BOM or equipment data is messy.
• enterdata-consulting.com — Focused specifically on ERP data migration, including legacy assessment, cleansing/deduplication, mapping, test loads, reconciliation and cutover.

What I'd ask them to do

Don't just ask for "data cleansing." A good pre-migration workstream should include:

1. Profile the legacy database — completeness, duplicates, invalid values, orphaned records, inconsistent formats.
2. Define what actually migrates — master data, open transactions, balances, selected history, versus archive.
3. Clean and deduplicate — customers, vendors, products/items, employees, chart of accounts, etc.
4. Standardize — addresses, units of measure, naming conventions, classifications, tax codes, payment terms, currencies.
5. Map source → target — including transformation rules and cross-reference tables.
6. Run multiple mock migrations and reconcile counts, balances and critical business relationships before go-live.

For example, Infor's own migration methodology explicitly separates profiling → cleansing → mastering/deduplication → mapping → iterative migration/testing, which is a good model regardless of which ERP you're moving to.

If you tell me your legacy ERP, the new ERP, approximate company size/data volume, and industry, I can narrow this to 3–5 firms that are particularly well suited and compare them by specialization, likely project size, and approach.

Moving off a legacy ERP system is the perfect opportunity to eliminate years of accumulated data debt. Because most core ERP vendors (like SAP, Oracle, or NetSuite) do not handle legacy data cleansing as part of their standard deployment contracts, you will need to look to specialized firms.

The market is generally split into three types of specialists depending on the scale and complexity of your legacy data:

1. Dedicated Data Migration & Cleansing Specialized Firms

These boutique and mid-market firms specialize purely in data transitions, ETL pipelines, and master data remediation. They are highly agile and strictly focused on data logic rather than overall ERP workflows.

• FreedomDev : Specializes heavily in legacy system modernization, database schema mapping, and deep programmatic cleansing (including formatting standardization, referential integrity repair, and orphan record cleanup).
• Pomerol Partners : Focuses on AI-accelerated data cleansing for ERP migrations. They leverage machine learning for entity resolution to automatically cluster and match duplicate customer, vendor, or product data.
• Damco Solutions : Widely recognized for large-scale enterprise data profiling and parsing. They combine automated proprietary tools with human data scientists to manually validate and enrich messy legacy datasets.
• enterDATA : Focuses entirely on ERP-specific migration consulting, handling legacy assessment, deduplication, and staging validation gates before final load.

2. Independent ERP Advisory Firms

If you need a firm that can oversee the cleansing strategy while managing the overall transition timeline, independent advisors are ideal because they do not sell software.

• ERP Advisors Group : They act as client-side technical leads specifically to audit legacy green screens, AS/400s, or older relational databases, helping your team strip away obsolete history and scope out exactly what needs to be cleaned.
• Panorama Consulting Group : Specializes in aligning data governance and field mapping with your upcoming target operating model, ensuring data ownership is established before the migration kicks off.

3. Global System Integrators (GSIs)

For massive, multi-national legacy migrations (e.g., migrating an ancient on-premise system to SAP S/4HANA Cloud or Oracle Cloud), global tech consultants deploy massive, dedicated data-cleansing practices using proprietary software.

• Hexaware & EXL Service : Both utilize intelligent automation and "data modernization frameworks" to rapidly ingest, profile, and transform legacy enterprise data.
• PiLog Group : Highly specialized in Master Data Governance (MDG) and structured asset/supply chain data cleansing specifically for heavy industries.

Crucial Steps to Take Right Now

Before engaging a vendor, keep these strategies in mind to control your migration costs:

• Scope Down the History : Do not pay a vendor to clean everything. Apply a firm cutoff rule (e.g., archive customers or closed transactional records older than 7 years) to shrink the data volume.
• Map First, Clean Second : Do not try to clean data blindly. Identify the data schema requirements of your new ERP first, then clean the legacy data specifically to fit those target fields.
• Appoint Internal Owners : External consultants can write the cleanup scripts, but only your internal operations or finance teams can definitively confirm if a duplicate customer record or unmapped SKU should be merged or deleted.

If you would like to narrow down this list, could you tell me:

• What specific legacy ERP are you moving off of, and what is the target system?
• What industry are you in (e.g., manufacturing with complex BOMs, or retail with millions of customer profiles)?
• What is the approximate volume of records or the overall size of your IT database?

Specialized ERP data migration and independent consulting firms , alongside data quality software vendors , specialize in data profiling, deduplication, and cleansing before moving off a legacy system.

Specialized ERP Consulting & Migration Firms

• Panorama Consulting Group : Independent ERP consultants who provide rigorous pre-migration data audits, readiness assessments, and data cleansing strategy.
• Plat4Mation / Platform Transition : Focuses heavily on structuring operational data, technical data mapping, and master data cleanup during system transitions.
• Big Four & Global System Integrators (Deloitte, PwC, EY, KPMG, Accenture) : Maintain dedicated enterprise data practices and proprietary migration factories to scrub, normalize, and transform legacy master records.

Dedicated Data Quality & Cleansing Software Platforms

• Data Ladder : Offers specialized data matching, fuzzy logic deduplication, and profiling software designed to fix incomplete or duplicate legacy ERP records prior to migration.
• Syncsort / Precisely : Provides enterprise-grade data integrity and cleansing tools to extract, validate, and standardize legacy database fields.
• Informatica : Delivers cloud data management and data quality governance solutions used to identify and purge obsolete SKUs, customer records, and financial tags.

If you'd like to narrow this down, please share:

• What legacy ERP system you are currently on (e.g., SAP ECC, Oracle, Infor, Microsoft Dynamics)
• The approximate volume or types of records (e.g., millions of transactional rows vs. master customer/item data)

I can provide a more tailored list of software tools or specialized partners suited to your stack.

Yes. The specialists you want are usually called ERP data migration / data quality consultants, rather than a general ERP implementation firm. Their job is to make the legacy data migration-ready before it gets loaded into the new ERP.

A few firms worth shortlisting:

• syniti.com — Strong enterprise option for complex ERP migrations. They specialize in data assessment, cleansing, matching, migration, and master-data management, including SAP environments.
• trucordata.com — More focused consultancy around ERP data migration, data quality, and master-data governance. They specifically describe handling extraction, cleansing, transformation, validation, and cutover.
• enterdata-consulting.com — Independent ERP data-migration specialists covering legacy assessment, cleansing/deduplication, mapping, test loads, reconciliation, and cutover.
• credencys.com — Particularly relevant if you're moving to Odoo, SAP, NetSuite, or Dynamics 365; they explicitly offer normalization, deduplication, enrichment, and migration validation.
• sharecatdataservices.com — Worth considering for manufacturing/industrial data, especially where product, supplier, BOM, classification, and technical master data are messy.

What I'd look for

Don't hire someone who simply says they can "export/import the ERP." The specialist should be able to demonstrate a process for:

1. Profiling — identify duplicates, missing fields, obsolete records, inconsistent units/codes, orphaned records, etc.
2. Business-led cleansing — decide what gets merged, deleted, standardized, or retained.
3. Master-data rationalization — particularly customers, vendors, products/items, BOMs, chart of accounts, and locations.
4. Mapping & transformation — map legacy structures to the new ERP.
5. Mock migrations — repeatedly load and reconcile data before go-live.
6. Governance — prevent the new ERP from becoming polluted again.

For example, Syniti explicitly treats cleansing and validation as part of the migration methodology rather than simply moving the existing data unchanged.

If you tell me your legacy ERP and what you're migrating to (e.g., SAP ECC → S/4HANA, JD Edwards → Dynamics 365, Oracle → NetSuite), I can narrow this down to 3–5 specialists that are particularly suited to your migration, including approximate company size/fit and what each is best at.