Message type: E = Error
Message class:  FKK_ID_XX_ODN - ODN message 
Message number: 073
Message text: An entry already exists for the same validity period
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The SAP error message FKK_ID_XX_ODN073 indicates that there is an attempt to create or modify an entry in the system that conflicts with an existing entry for the same validity period. This typically occurs in the context of contract accounts, billing, or financial transactions where overlapping validity periods are not allowed.
Cause: Duplicate Entries: The error is often caused by trying to create a new entry (like a contract, billing document, or condition record) that has the same validity period as an existing entry. Incorrect Data Entry: There may be a mistake in the data entry where the validity dates are not set correctly, leading to overlaps. System Configuration: The system may be configured to prevent overlapping entries for specific business processes, which can trigger this error.
Solution: Check Existing Entries: Review the existing entries in the relevant table or transaction to identify if there is already an entry with the same validity period. You can
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