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Author's profile photo Pablo Mejias

ECC to S/4 HANA – Finance Conversion

This blog will detail the important points to consider for a conversion.

As a first step we need to determine the business processes that will be impacted when making the conversion to S/4. For that you need to check the simplification list Simplification


As approach it is important to know the following points:

        Business Partner Approach (Customer/Vendor integration) mandatory in S/4HANA

        The FI-AR-CR Credit Management has been replaced by SAP Credit Management (FIN-FSCM-CR)

        Material Ledger mandatory for material valuation

        Classic Cash Management has been replaced by new SAP Cash Management.

        New Asset Accounting Required

        Classic Real Estate has been replaced by New Real Estate

        Fiori 2.0 required if Fiori is used in 1709

        Traditional Foreign Trade functionality in SD/MM replaced by Global Trade Server

        Revenue Recognition in SD (SD-RR) has been replaced by free of charge add on Revenue    Accounting and Reporting


Check this link:

Now it is necessary to understand that: S/4 HANA Conversion is not a technical upgrade only. It includes functional changes. This must be considered appropriately in the project plan.


And now talking about Finance Conversion you need know:

  • SAP conversion programs read data from old tables and transfer them to new structures.
  • Compatibility views (tables) are created to make old reports / transaction codes work.
  • Configuration/customizing has to be adapted in some areas (see Simplification List).
  • For Finance the customizing has to be done during Conversion. It cannot be prepared in the old system.
  • With a system Conversion it is not possible to activate new functionalities like document split, parallel ledgers etc. Classic general ledger is transferred technically to new general ledger/ACDOCA without activating new functionalitie


The tasks to be performed in the source system before conversion are the following:

  • Identify and review the relevant Simplification items
  • Prepare Asset Accounting and Material Ledger
  • Run Customizing pre-checks and adapt settings, if needed
  • Check consistency and reconcile data
  • Period end closing activities
  • Document your posting data
  • Archive data no longer need


Preparing Application Specific Tasks




Finally at the time of making the conversion it is important to know 2 things:


1- During the migration of information, errors of information inconsistencies can be detected:

  • Inconsistencies caused by hardware defect (e.g. corrupt blocks)
  • Inconsistencies caused by user handling errors (e.g. switching off line item display in FI
  • without line item deletion, missing balance carry forward, etc.)
  • Customer reports without consistent updates on the database
  • Manipulation on the database (e.g. direct postings on reconciliation accounts)
  • Improper customizing changes (without respecting warning messages)
  • Wrong migration (from former migrations)
  • Wrong data management strategy (e.g. deletion of wrong data, archiving of FI data of the current fiscal year)

2- Recon Reports (to be run before and after conversion)

  • The financial statements (program RFBILA00)
  • The asset history sheet (program RAGITT_ALV01)
  • The depreciation run for the planned depreciations (program RAHAFA_ALV01)
  • The totals report for cost centers (transaction S_ALR_87013611)
  • Sales order selection (program RKKBSELL)
  • The G/L account balance list (program RFSSLD00)
  • The general ledger line items list (program RFSOPO00)
  • The compact document journal (program RFBELJ00)
  • The vendor sales (program RFKUML00)
  • The vendor open item list (program RFKEPL00)
  • The customer sales (program RFKUML00)
  • The customer open item list (program RFDEPL00)
  • The customer recurring entry original documents (program RFDAUB00)
  • The cost centers: actual/plan/variance (transaction GR55 with report group 1SIP)



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      Author's profile photo Svelatna Yancheva
      Svelatna Yancheva

      Very useful!

      Author's profile photo Daniel Araújo Santos
      Daniel Araújo Santos

      Great work!

      Author's profile photo Muhammad Hasan Mufid
      Muhammad Hasan Mufid

      Thank you

      Author's profile photo venu gopal
      venu gopal

      Very hard work , nice presentation..

      Author's profile photo balu siva
      balu siva

      Nice Presentation and well informative.

      Author's profile photo Mohd Kabiruddin
      Mohd Kabiruddin

      Much more useful

      Author's profile photo Sesha Narayana Yerram
      Sesha Narayana Yerram

      Very useful document