How To Fix MC236 - No suitable index exists yet for matchcode ID &-& (-> long text)

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 236

• Message text: No suitable index exists yet for matchcode ID &-& (-> long text)

What causes this issue?

When activating a transparent matchcode ID (update type = 'I'), there
is a check for a likely database index for this matchcode ID. Such a
database index is generally necessary in order to support the matchcode
search for a typical selection for this matchcode. The absence of such
a database index could cause considerable performance problems during
matchcode selection.
The system assumes that the first field in the matchcode definition
(for client-specific matchcodes the first field after the client field)
is the relevant search field for this matchcode, i.e. that the end user
will limit this field in the matchcode search by entering a selection
value. A likely database index is therefore an index which contains the
relevant matchcode search field (possibly following a client field).

System Response

The system has now found that there is no likely database index for a
transparent matchcode ID.

How to fix this error?

If the matchcode view on the database (possibly taking a selection
condition into consideration) contains less than 1000 data records, it
is not necessary to create an index.
If there are considerably more than 1000 records in the matchcode view
on the database, you should create an index. This index should begin
with the fields to be searched for with equality (client, language, or
all the fields for which the 'Get Parameter' flag is set, i.e. the flag
GP of the Maintain Matchcode ID (Fields) screen). This is especially
true if they are used in the primary index. This is important in order
to ensure that the created secondary index is better than the primary
index from the point of view of the database optimizer).
The index thus has the following structure:
Client field if the table is client-specific
Fields for which the 'Get Parameter' flag is set, should any exist
Field used in the search
This index structure, however, does not always ensure that the index
created is also used by the subordinate DBMS for data selection (this
depends on the DBMS optimizer used). You can check this as follows:
Open a second session and select <LS>System -> Utilities -> SQL Trace
</>. Press the pushbutton <LS>Trace on</>. Make a search entry in the
first session and send it. Then press the pushbutton <LS>Trace off</>
in the second session and press the pushbutton <LS>List trace</>.
Search for statements in which the matchcode view M_<MC object name>
<Matchcode ID> is used and display further information about it with
the function <LS>Explain one SQL Request</>. You will find out here
which index was used.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MC236 - No suitable index exists yet for matchcode ID &-& (-> long text) ?

  The SAP error message MC236 indicates that there is no suitable index available for the specified matchcode ID. This typically occurs when you are trying to use a matchcode (a type of search help in SAP) that has not been properly defined or indexed in the system.
  Cause:
  
  Missing Index: The matchcode ID you are trying to use does not have an associated index created in the system.
  Incorrect Matchcode ID: The matchcode ID specified may be incorrect or not exist in the system.
  Data Issues: There may be issues with the underlying data that the matchcode is supposed to reference.
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to access the matchcode.
  
  Solution:
  
  
  Create or Update the Matchcode Index:
  
  Go to transaction code SE11 (Data Dictionary).
  Enter the matchcode ID in the "Matchcode ID" field and check if it exists.
  If it does not exist, you may need to create a new matchcode or update the existing one.
  If it exists, ensure that the index is properly defined and activated.
  
  
  
  Check Matchcode Configuration:
  
  Use transaction code SE78 to check the matchcode configuration.
  Ensure that the matchcode ID is correctly set up and that the necessary tables and fields are included.
  
  
  
  Rebuild the Index:
  
  If the matchcode index exists but is not functioning, you may need to rebuild it. This can often be done through the matchcode maintenance transaction (transaction code MC21).
  
  
  
  Check User Authorizations:
  
  Ensure that the user has the necessary authorizations to access the matchcode. This can be checked in transaction SU53 or by consulting with your security team.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help resources for specific details related to the matchcode ID you are working with.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SE11: Data Dictionary
  SE78: Matchcode Maintenance
  MC21: Matchcode Index Maintenance
  SU53: Authorization Check
  
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific matchcode ID or error message.
  
  
  SAP Community: Engage with the SAP Community forums for additional insights or similar issues faced by other users.
  
  
  By following these steps, you should be able to resolve the MC236 error and ensure that the matchcode ID is functioning correctly in your SAP system.