How To Fix AP024 - Edit mask is not correctly defined

AP024 - Overview

• Message type: E = Error

• Message class: AP - Investment program messages

• Message number: 024

• Message text: Edit mask is not correctly defined

What causes this issue?

The edit mask you entered is not valid. When creating the edit mask,
please be aware of the following rules:
The following characters are allowed for edit masks:
The special symbols allowed in Customizing (as editing characters). At
the present time these are the symbols "&V1&".
An "X" as placeholder for alpha-numeric characters.
A "0" as placeholder for numerical characters.
One of the allowed special symbols "&V1&" must be in the first place of
the edit mask.
Spaces are not permitted in the edit mask.

How to fix this error?

Please correct your entries.

Error message extract from SAP system. Copyright SAP SE.

AP024 - Details

• The SAP error message AP024, which states "Edit mask is not correctly defined," typically occurs when there is an issue with the format or definition of an edit mask in the system. An edit mask is a template that defines how data should be entered or displayed in a specific field, often used for input validation.
  Causes:
  
  Incorrect Edit Mask Definition: The edit mask may not be defined correctly in the system settings, leading to mismatches between the expected input format and the actual input.
  Data Type Mismatch: The data being entered may not conform to the expected data type defined by the edit mask (e.g., entering letters in a numeric field).
  Field Length Issues: The length of the input data may exceed the defined length in the edit mask.
  Configuration Errors: There may be errors in the configuration settings related to the field or the edit mask in the relevant module.
  
  Solutions:
  
  
  Check Edit Mask Configuration:
  
  Navigate