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

MC138 - Overview

• 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