Message type: E = Error
Message class:  CNV20551 - message for package 20551 (company code delete) 
Message number: 487
Message text: Personnel area & missing in CNV_20551_PERSA
Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.
To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.
Unfortunately, there isn't any extra information in this error notice.
First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).
Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.
You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.
The SAP error message CNV20551487 indicates that a specific personnel area is missing in the conversion program CNV_20551_PERSA. This error typically arises during data migration or conversion processes, particularly when using SAP's data migration tools or during system upgrades.
Cause: Missing Personnel Area: The personnel area specified in the error message does not exist in the target system or is not defined in the source data.
Configuration Issues: There may be configuration issues in the SAP system where the personnel area is not properly set up or is inactive. Data Mapping Issues: The mapping of personnel areas between the source and target systems may not be correctly defined, leading to missing entries.
Solution: Check Personnel Area Configuration: Go to the SAP configuration (SPRO) and check if the personnel area in question is defined and active. Ensure that the personnel area exists in both the source and target systems. Data Validation: Validate the data being migrated to ensure that all required
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV20551486 Number of personnel numbers for deletion: &
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV20551485 Personnel numbers for deletion:
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV20551488 PERSA=&1 is not to be deleted, but related BUKRS=&2 is to be deleted
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV20551489 PERSA=&1 is to be deleted, but related BUKRS=&2 is not to be deleted
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
Click on this link to search all SAP messages.