Message type: E = Error
Message class:  CNV - Conversion: Messages for Conversion Services (CNCC) 
Message number: 026
Message text: Note: any CUSTOMIZING order should also be deleted
After all the entries in a package were deleted, there is no point in
still transporting any transport order using the relevant CUSTOMIZING.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Delete the CUSTOMIZING order using
<DS:TRAN.SE10>CUSTOMIZING-ORGANIZER</>
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV026 typically relates to issues encountered during the data migration process, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that there are customizing orders (or transport requests) that need to be deleted before proceeding with the migration or data transfer.
Cause: Existing Customizing Orders: The error arises when there are existing customizing transport requests that are not compatible with the migration process. These could be orders that have not been released or are still in a development state. Data Integrity Issues: The presence of these orders may lead to data integrity issues during the migration, as the system may not be able to reconcile the changes made in the customizing orders with the data being migrated. System Configuration: The system may have configurations that are preventing the migration process from proceeding smoothly due to these outstanding customizing orders.
Solution: Identify Customizing Orders: Use transaction codes like
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