How To Fix MC138 - Structure of matchcode object & only permits transparent IDs

SAP Error Message - Details

• Message type: E = Error

• Message class: MC - Aggregate: views, matchcodes, lock objects

• Message number: 138

• Message text: Structure of matchcode object & only permits transparent IDs

What causes this issue?

Each table of the matchcode object which is referenced by two or more
tables must itself be a root table or reference a further table in
order that physically implemented IDs can be created for a matchcode
object.
The matchcode IDs which have update type A, P or S are physically
implemented.

System Response

Error message.

How to fix this error?

Create a transparent matchcode ID or change the definition of the
matchcode object.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MC138 - Structure of matchcode object & only permits transparent IDs ?

  The SAP error message MC138 indicates that there is an issue with the structure of a matchcode object, specifically that it only permits transparent IDs. This error typically arises in the context of matchcode objects, which are used in SAP to provide search help for various data fields.
  Cause:
  The error occurs when the matchcode object is defined in a way that it expects transparent IDs (which are unique identifiers for database records) but is being provided with a non-transparent ID or an incorrect structure. This can happen due to:
  
  Incorrect Definition: The matchcode object may not be correctly defined in the Data Dictionary (SE11).
  Data Structure Issues: The underlying data structure may not align with the requirements of the matchcode object.
  Incompatible Data Types: The fields used in the matchcode object may not be compatible with the expected data types.
  
  Solution:
  To resolve the MC138 error, you can follow these steps:
  
  
  Check Matchcode Object Definition:
  
  Go to transaction SE11 and check the definition of the matchcode object.
  Ensure that the structure is defined correctly and that it only includes transparent IDs.
  
  
  
  Review Data Structure:
  
  Verify the underlying table or structure that the matchcode object is based on.
  Ensure that all fields are defined as transparent and that there are no non-transparent fields included.
  
  
  
  Adjust Data Types:
  
  Make sure that the data types of the fields in the matchcode object match the expected types in the underlying database table.
  
  
  
  Recreate Matchcode Object:
  
  If the matchcode object is incorrectly defined, consider deleting and recreating it with the correct parameters.
  
  
  
  Check for Transport Issues:
  
  If the matchcode object was transported from another system, ensure that all dependencies and related objects were also transported correctly.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidelines on defining matchcode objects.
  
  
  
  Related Information:
  
  Transaction Codes: SE11 (Data Dictionary), SE80 (Object Navigator), SE37 (Function Module).
  Matchcode Objects: These are used in SAP to provide search help for fields in various applications, allowing users to find data more easily.
  Transparent Tables: These are database tables that correspond directly to a table in the database and are used to store application data.
  
  If the issue persists after following these steps, it may be beneficial to consult with an SAP Basis or ABAP consultant who can provide deeper insights into the specific configuration and coding aspects of your SAP environment.