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Migration from FB to BCS should be carried out according to certain basic rules as listed below. Clarification and details on each rule can be found in the corresponding sections of the entire migration documentation.

  1. Migration is restricted to budget tables. Data is taken over from the database without checking the consistency on the FB side. This means that there is no validation of the budget structure. The only checks are done according to BCS settings when the migration is done on the document level. See Budget Tables in the Database .

  2. For funds with overall and annual budget, only annual amounts for the selected years get migrated. This means you must make sure that the sum of annuals = overall. Otherwise the delta (the part of the overall amount that is not assigned to a specific fiscal year) is left behind, that is, not migrated. If a delta exists, a message is written to the message log of the document-based (FMKUMIGDOC) and totals-based (FMKUMIGTOT) migration reports.

  3. FM budget account assignments before and after migration are identical.

  4. Mapping tables in Customizing show which FB data gets migrated and the correspondence between old FB and new BCS fields. They also show you which data is not migrated (for example, AVC records). See Mapping Budget Types/Processes from FB to BCS .

  5. During migration, the system evaluates for each document line the delta between the total amount and the distributed amount, since BCS deals only with the budget of each account assignment. If there is no delta, no amount is migrated, because there is no “zero-amount migration”.

  6. New FM account assignments in BCS will not receive any migrated budget from Former Budgeting, as these did not exist in FB. Starting with ECC 6.0, you can define default values to receive migrated budget. See FM Account Assignment Elements .

  7. Totals migration : The following rules apply here:

    • The migration report can be started several times – every time it is run, already existing migrated data gets deleted in a first step before processing the new migration data in a second step.

    • The migration report cannot be restarted if, other than migrated data, any data exists in the target version and fiscal year for the selected funds.

      See Totals-Based Migration .

  8. Document migration : The basis for processing is the FB budget document. If a document has already been migrated, the processing options determine how it will be re-processed: full (delete the corresponding documents in BCS and re-process the FB documents) or delta (migrate the documents that have not been processed yet and ignore all other documents).

    Note: You can migrate your budget documents even if data already exists in BCS. See Document-Based Migration .