SAP Message RU531 - Confirmation with external key &1 not found

Diagnosis
You tried to uniquely identify a confirmation by specifying external keyV1. however, this was not possible. possible reasons for this are asfollows:

  • The system does not know of a confirmation with the specified external
    • key &V1&.
    • External key &V1& has been assigned to several confirmations.

      • Procedure
      A confirmation can be identified by entering the confirmation numbercombined with the confirmation counter. A confirmation is uniquelyidentified in the system using this field combination.