Message type: E = Error
Message class:  NAA - Subsequent settlement (Purchasing) 
Message number: 648
Message text: Structure &2 does not contain a field &1 (internal field, termination)
According to the Data Dictionary, structure &V2& contains field &V1&.
However, attempts to assign a value to this field were not successful.
Processing is terminated.
INCLUDE ISR_VERWALTUNG
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Error message extract from SAP system. Copyright SAP SE.
The SAP error message NAA648 indicates that there is an issue with a structure in your ABAP program or configuration. Specifically, it means that the structure specified (denoted by &2) does not contain a field that is being referenced (denoted by &1). This can occur in various scenarios, such as when trying to access a field that has been removed or renamed, or when there is a mismatch between the expected structure and the actual structure being used. Cause Field Removal or Renaming: The field you are trying to access may have been removed or renamed in the structure definition. Incorrect Structure: The structure being referenced may not be the correct one for the context in which it is being used. Data Dictionary Changes: Changes in the Data Dictionary (like modifications to tables or structures) that have not been reflected in the program. Typographical Errors: There may be a typo in the field name or
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