Message type: E = Error
Message class:  CNV20551 - message for package 20551 (company code delete) 
Message number: 812
Message text: All company codes are selected for deletion
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The SAP error message CNV20551812, which states "All company codes are selected for deletion," typically occurs during data migration or conversion processes, particularly when using SAP's data migration tools or during the execution of specific programs related to the conversion of company codes.
Cause: This error usually arises when: All Company Codes are Marked for Deletion: The system detects that all company codes in the selection criteria are flagged for deletion, which is not a valid operation. Incorrect Configuration: There may be a misconfiguration in the migration settings or parameters that leads to the selection of all company codes for deletion. Data Migration Process: During a data migration process, if the mapping or selection criteria are not set correctly, it can lead to this error.
Solution: To resolve this error, you can take the following steps: Review Selection Criteria: Check the selection criteria used in the migration or conversion program. Ensure that not all company codes are selected
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