Message type: E = Error
Message class:  FKK_ID_XX_ODN - ODN message 
Message number: 070
Message text: Only customer ODN processing class is allowed
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The SAP error message FKK_ID_XX_ODN070 indicates that there is an issue related to the processing class of a customer in the context of contract accounts receivable and payable (FI-CA). This error typically arises when a transaction is attempted for a customer that is not configured to allow the specific processing class required for the operation being performed.
Cause: The error is caused by the following scenarios: Incorrect Customer Configuration: The customer account may not be set up with the appropriate processing class that allows the operation you are trying to perform. Transaction Type Restrictions: The transaction type you are trying to execute may only be valid for customers with a specific processing class (in this case, the ODN processing class). Data Inconsistencies: There may be inconsistencies in the data related to the customer account or the transaction being processed.
Solution: To resolve the error, you can take the following steps: Check Customer Configuration: Go to the customer master data
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