How To Fix TPDA820 - Diff tool: A variable type is unknown (&1/&2)

TPDA820 - Overview

• Message type: E = Error

• Message class: TPDA - Debugger

• Message number: 820

• Message text: Diff tool: A variable type is unknown (&1/&2)

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message TPDA820 - Diff tool: A variable type is unknown (&1/&2) ?

  The SAP error message TPDA820, which states "Diff tool: A variable type is unknown (&1/&2)," typically occurs during the use of the transport management system (TMS) or when comparing objects in the SAP system. This error indicates that the system encountered a variable type that it does not recognize or cannot process.
  
  Cause:
  
  Unknown Variable Type: The error is often caused by a variable type in the code or object that is not defined or recognized by the system. This can happen if the variable type is custom or if there are inconsistencies in the data dictionary.
  Transport Issues: If the transport request includes objects that reference types or structures that are not available in the target system, this error may occur.
  Version Mismatch: If there are differences in the versions of the objects between the source and target systems, it may lead to this error.
  
  
  Solution:
  
  Check Object Definitions: Verify that all variable types used