Message type: E = Error
Message class:  CNV20551 - message for package 20551 (company code delete) 
Message number: 759
Message text: Table level maintenance is not possible as DI is inactive for the package
Drop Insert technique is Inactive at the package level. Hence table
level maintenance for Drop Inser technique is not possible.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
If you want to configure the Drop Insert technique at table level,
activate the Drop Insert technique at the table level.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV20551759 indicates that table-level maintenance is not possible because Data Integrity (DI) is inactive for the package you are working with. This error typically arises in the context of data migration or conversion processes, particularly when using SAP's Data Migration tools or during system upgrades.
Cause: The primary cause of this error is that the Data Integrity (DI) feature is not activated for the specific package you are trying to work with. Data Integrity is a mechanism that ensures the consistency and validity of data during operations such as data migration, and it must be enabled for certain operations to be performed.
Solution: To resolve this error, you can follow these steps: Check Package Settings: Verify the settings of the package you are working with. Ensure that Data Integrity is activated for that package. Activate Data Integrity: Go to the relevant transaction code (e.g., SE80 for Object Navigator or SE11 for Data Dictionary). Navigate
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