How To Fix CMMD026 - Insert/delete/update command delivered an error

CMMD026 - Overview

• Message type: E = Error

• Message class: CMMD -

• Message number: 026

• Message text: Insert/delete/update command delivered an error

What causes this issue?

An insert/update/delete command on the database could not be executed.
An unforeseen error occurred in the program. The program tried to write
to the database a data record that was inadmissable.

System Response

All admissable changes have been saved to the database. Inadmissable
changes have not been saved.

How to fix this error?

Although inadmissable database access does not lead to incorrect data,
it must be avoided for performance reasons. Create a CSN message.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CMMD026 - Insert/delete/update command delivered an error ?

  The SAP error message CMMD026, which states "Insert/delete/update command delivered an error," typically occurs during database operations when there is an issue with executing a command that modifies data in the database. This error can arise from various causes, and understanding these can help in troubleshooting and resolving the issue.
  Possible Causes:
  
  Database Constraints: The operation may violate database constraints such as primary key, foreign key, unique constraints, or check constraints.
  Data Type Mismatch: The data being inserted or updated may not match the expected data type of the database column.
  Null Values: Attempting to insert or update a column that does not allow null values with a null value.
  Locking Issues: The database table may be locked by another transaction, preventing the current operation from proceeding.
  Insufficient Permissions: The user executing the command may not have the necessary permissions to perform the insert, update, or delete operation.
  Triggers: Database triggers may be causing the operation to