How To Fix FAGL_MIG128 - No FI-SL source ledger stored for migration plan &1

FAGL_MIG128 - Overview

• Message type: E = Error

• Message class: FAGL_MIG - Migration to New General Ledger Accounting

• Message number: 128

• Message text: No FI-SL source ledger stored for migration plan &1

What causes this issue?

No assigned FI-SL source ledger found for the migration plan.

System Response

Processing is terminated.

How to fix this error?

If you have selected a migration type that involves the transfer of
document splitting information from a special purpose ledger, enter a
source ledger in Customizing for the migration.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

FAGL_MIG128 - Details

• The SAP error message FAGL_MIG128 indicates that there is no Financial Accounting (FI) Subledger (FI-SL) source ledger stored for the specified migration plan. This error typically occurs during the migration process when you are trying to migrate data from an existing system to the new General Ledger (G/L) in SAP S/4HANA.
  
  Cause:
  
  Missing Configuration: The migration plan you are using does not have a source ledger defined in the system.
  Incorrect Migration Plan: The migration plan specified may not be correctly set up or may not correspond to the existing FI-SL ledgers.
  Data Migration Issues: There may be issues with the data migration setup, such as missing entries in the configuration tables.
  
  
  Solution:
  To resolve the FAGL_MIG128 error, you can follow these steps:
  
  
  Check Migration Plan Configuration:
  
  Go to the transaction code OBY6 (or the relevant configuration transaction) to check the configuration of your migration plan.
  Ensure that the source ledger is correctly defined for the migration plan you