How To Fix AXT_COMMON021 - Check table &1 is not compatible

AXT_COMMON021 - Overview

• Message type: E = Error

• Message class: AXT_COMMON - Extensibility common messages

• Message number: 021

• Message text: Check table &1 is not compatible

What causes this issue?

You have tried to use a check table for an extension that is not
compatible.
A compatible check table has to fullfil the following requirements:
It must not have more than one key field, except the client field
The data type of the key field must be based on a domain
A check table can have a related text table. The first character-type
field will be shown as a description in a value help.

System Response

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

How to fix this error?

Use another check table or change the table definition accordingly.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AXT_COMMON021 - Check table &1 is not compatible ?

  The SAP error message AXT_COMMON021, which states "Check table &1 is not compatible," typically occurs when there is an issue with the compatibility of a check table in the context of data validation or integrity checks. This error can arise in various scenarios, such as during data entry, configuration, or when executing certain transactions.
  Causes:
  
  Incompatible Data Types: The data types of the fields in the check table may not match the expected data types in the main table.
  Missing Entries: The check table may not have the necessary entries that correspond to the values being validated.
  Table Structure Changes: If the structure of the check table has been modified (e.g., fields added or removed), it may no longer be compatible with the referencing table.
  Transport Issues: If the check table was transported from another system, there may be inconsistencies or missing elements.
  Custom Development: Custom programs or enhancements may not be correctly handling the check