How To Fix 37044 - No matchcode subkey can be assigned to field &

SAP Error Message - Details

• Message type: E = Error

• Message class: 37 - Screen Painter

• Message number: 044

• Message text: No matchcode subkey can be assigned to field &

What causes this issue?

You selected the matchcode sub-keys function for a field for which no
matchcode sub-keys can be defined.

System Response

Matchcode sub-keys can only be defined for fields to which a matchcode
object is assigned and which also have the following attributes:

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

- input/output field
- not a graphical element (e.g. checkbox or pushbutton)
- no assigned icon
Since at least one of these conditions is not satisfied, the system
does not execute the function.

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 37044 - No matchcode subkey can be assigned to field & ?

  The SAP error message "37044 No matchcode subkey can be assigned to field &" typically occurs when you are trying to assign a matchcode (search help) to a field in a way that is not supported by the system. This error can arise in various contexts, such as when defining a data element, creating a table, or configuring a search help.
  Cause:
  
  Field Type Incompatibility: The field you are trying to assign a matchcode to may not be compatible with the matchcode subkey. For example, if the field is of a type that does not support matchcodes (like certain numeric types), this error can occur.
  Missing Matchcode Definition: The matchcode you are trying to assign may not be properly defined or may not exist in the system.
  Incorrect Configuration: There may be an issue with how the matchcode is configured in the data dictionary or in the relevant search help.
  
  Solution:
  
  Check Field Type: Ensure that the field you are trying to assign the matchcode to is of a compatible type. Matchcodes are typically used with character fields.
  Verify Matchcode Definition: Check if the matchcode you are trying to use is correctly defined in the system. You can do this by navigating to the transaction code SE11 (Data Dictionary) and checking the matchcode object.
  Review Search Help Configuration: If you are using a search help, ensure that it is correctly configured and that the matchcode is properly linked to the search help.
  Use Appropriate Matchcode: If the field is not suitable for the matchcode you are trying to assign, consider using a different matchcode that is compatible with the field type.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on matchcode usage and configuration.
  
  Related Information:
  
  Transaction Codes: SE11 (Data Dictionary), SE80 (Object Navigator), SE84 (Repository Information System).
  SAP Notes: Check SAP Notes for any known issues or updates related to matchcodes and search helps.
  SAP Community: Engage with the SAP Community forums for insights and solutions from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or ABAP team for further investigation.