How To Fix FH501 - Internal error: Action "&1" does not exist

FH501 - Overview

• Message type: E = Error

• Message class: FH - General ledger module messages

• Message number: 501

• Message text: Internal error: Action "&1" does not exist

What causes this issue?

An internal error occurred. The data transferred to the update module
is inconsistent. The action "&V1" is to be carried out for the selected
G/L account, but this action does not exist.

System Response

The processing is not carried out.

How to fix this error?

Contact your system administrator.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

FH501 - Details

• The SAP error message FH501, which states "Internal error: Action '&1' does not exist," typically indicates that the system is trying to execute an action that is not defined or recognized in the context of the current operation. This can occur in various scenarios, such as during the execution of a transaction, report, or program.
  Causes:
  
  Missing Configuration: The action referenced in the error message may not be configured in the system. This could be due to missing entries in customizing tables or settings.
  Incorrect Action Name: The action name specified in the program or transaction may be misspelled or incorrectly referenced.
  Transport Issues: If the action was recently transported from another system, it may not have been properly imported or activated.
  Version Mismatch: The error may occur if there is a version mismatch between the components of the SAP system, especially if custom developments are involved.
  Authorization Issues: Sometimes, the user may not have the