Message type: E = Error
Message class:  CNV20551 - message for package 20551 (company code delete) 
Message number: 860
Message text: Plant &1 is not relevant, but assigned Maint. Planning Plant &2 is relv.
The Plant is not deletion relevant, but its assigned Maintenance
Planning Plant, is deletion relevant. The assignment can be checked SPRO
> Enterprise Structure > Assignment > Plant Maintenance > Assign
maintenance planning plant to maintenance plant.
If you proceed with the current settings, post deletion, you would have
inconsistencies in the assigned plant, as its Maintenance Planning Plant
will not exist. You will not be able to remove the assignment through
SPRO. You would get the error that the Planning Plant is not defined.
Evaluate the cross plant assignment, i.e. the assignment of Maintenance
Planning Plant, from a different company code, which is being deleted.
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.
The SAP error message CNV20551860 indicates that there is a mismatch between the plant assignment and the maintenance planning plant in your SAP system. Specifically, it suggests that the plant you are trying to work with (Plant &1) is not relevant for the operation you are attempting to perform, while the assigned maintenance planning plant (Plant &2) is relevant.
Cause: Plant Relevance: The plant you are trying to use may not be set up correctly in the system for the specific operation or transaction you are attempting to execute.
Configuration Issues: There may be configuration settings in the system that determine which plants are relevant for maintenance planning, and Plant &1 may not be included in those settings. Data Migration Issues: If this error occurs during a data migration process, it could be due to incorrect mappings or settings in the migration tool.
Solution: Check Plant Configuration: Go to the configuration settings for the plants in your
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