Message type: E = Error
Message class:  FKK_ID_XX_ODN - ODN message 
Message number: 104
Message text: Sub-ID &2 is assigned to metadata schema &1
If you have assigned a sub-ID to a metadata schema, you cannot delete or
change the metadata schema.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Delete the sub-ID assignment under <LS>Sub-ID Determination</> before
you delete or change the metadata schema under <LS>Define Schemas</>.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message FKK_ID_XX_ODN104 typically relates to issues with metadata schema assignments in the SAP Convergent Charging or SAP Contract Accounts Receivable and Payable (FI-CA) modules. This error indicates that a specific sub-ID is already assigned to a metadata schema, which can lead to conflicts or inconsistencies in data processing.
Cause: The error occurs when: A sub-ID (identified by &2) is being assigned to a metadata schema (identified by &1) that already has that sub-ID assigned to it. There may be an attempt to create or modify a configuration that violates the uniqueness constraint of sub-IDs within the specified metadata schema.
Solution: To resolve this error, you can take the following steps: Check Existing Assignments: Use transaction codes like FKK_ID or relevant configuration transactions to check the current assignments of sub-IDs to metadata schemas. Identify if the sub-ID is already assigned to another schema or if there are duplicate entries. Modify or Remove Conflicting Assignments: If the sub-ID is indeed
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