How To Fix MC232 - Key field & lies outside the key area

MC232 - Overview

• Message type: E = Error

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

• Message number: 232

• Message text: Key field & lies outside the key area

What causes this issue?

A pooled table definition is generated in the ABAP/4 Dictionary during
generation for each physical matchcode ID (update types A, S or P).
This pooled table is stored in the pool of the corresponding matchcode
object.
All the fields of the matchcode ID may be components of the key. The
maximum key length of the pooled table, however, is limited to 110
bytes.
In order to ensure that a matchcode ID is unique, at least all the
key fields of the matchcode ID (i.e. all the fields which are key
fields of one of the tables of the matchcode ID) must lie within the
first 110 bytes. This is not the case here.

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?

Either remove fields from the matchcode ID or change the
domains corresponding to the fields so that the upper limit of 110
bytes in the key of the matchcode ID is not exceeded.

Error message extract from SAP system. Copyright SAP SE.

MC232 - Details

• The SAP error message MC232, which states "Key field & lies outside the key area," typically occurs in the context of Material Management (MM) or Production Planning (PP) modules when there is an issue with the key fields in a data entry or reporting process. This error indicates that the value entered for a key field does not fall within the expected range or is not valid for the operation being performed.
  Causes:
  
  Invalid Key Field Value: The value entered for the key field does not exist in the database or is outside the defined range.
  Data Entry Errors: Typographical errors or incorrect data formats can lead to this error.
  
  Configuration Issues: The key field may not be properly configured in the system, leading to discrepancies.
  Master Data Issues: The relevant master data (like material master, vendor master, etc.) may not be set up correctly or may be missing.
  Authorization Issues: Sometimes, the user may not