Message type: E = Error
Message class:  FKK_SEPA - FI-CA: SEPA Mandate Management 
Message number: 011
Message text: No mandate with ID &2 found for business partner &1
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The SAP error message FKK_SEPA011 indicates that there is no SEPA mandate found for the specified business partner in the system. This error typically occurs when you are trying to process a payment or direct debit transaction that requires a valid SEPA mandate, but the system cannot find one associated with the given business partner.
Cause: Missing Mandate: The most common cause is that the SEPA mandate has not been created or is not active for the specified business partner. Incorrect Mandate ID: The mandate ID provided in the transaction may be incorrect or does not match any existing mandates in the system. Business Partner Issues: The business partner may not be correctly set up in the system, or there may be issues with the business partner's data. Data Synchronization: There may be a delay or issue in data synchronization if the mandate was recently created or modified.
Solution: Check Mandate Creation: Verify if the SEPA mandate
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