How To Fix AH793 - Unknown calculation reason: &1

AH793 - Overview

• Message type: E = Error

• Message class: AH - IS-U billing (master data)

• Message number: 793

• Message text: Unknown calculation reason: &1

What causes this issue?

Document &v2& cannot be deleted due to an unknown calculation reason
&v1&.

System Response

Deletion has been terminated.

How to fix this error?

The document may be a legacy document that was created with an old
version. In Transaction EA16 (change mode), make a change and save it.
After that the document should be deletable. If it is not, there is an
inconsistency. Contact SAP in this case.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AH793 - Unknown calculation reason: &1 ?

  The SAP error message AH793, which states "Unknown calculation reason: &1," typically occurs in the context of the SAP system's handling of calculations, particularly in modules related to financials, controlling, or logistics. The error indicates that the system encountered a calculation reason that it does not recognize or that is not defined in the system.
  
  Cause:
  
  Invalid Calculation Reason: The calculation reason provided in the transaction or configuration is not valid or does not exist in the system.
  
  Configuration Issues: There may be missing or incorrect configuration settings in the relevant module (e.g., pricing, cost calculation).
  Data Entry Errors: Users may have entered an incorrect value or code that does not correspond to any defined calculation reason.
  Custom Development: If there are custom developments or enhancements, they may not be handling certain calculation reasons correctly.
  
  
  Solution:
  
  Check Configuration: Review the configuration settings for the relevant module (e.g., pricing, cost calculation) to ensure that all necessary calculation reasons