Hi ,
Just check the below information might be help full .
OSS Note 1536111 (SEPA mandate: Document-related mandate) and note 1536205 (SEPA mandate: Mandate selection) describe how to control the selection of several possible mandates belonging to a customer’s bank type. This is done by means of a process-BTE (1812). Unfortunately there is no help for finding the suitable mandate in the document (SAP customer invoice). The information is stored only as text information in text fields (e.g. item text of the customer position) of the document.
Thanks and Regards,
Arun Mulgund