Message type: E = Error
Message class:  CNV20551 - message for package 20551 (company code delete) 
Message number: 230
Message text: CNVSTEPS : Package=&1, prio routine entries for STXB,STXH,STXL deleted
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 CNV20551230 is related to the SAP conversion process, specifically during data migration or system conversion activities. This error indicates that priority routine entries for the specified packages (STXB, STXH, STXL) have been deleted. Here’s a breakdown of the cause, potential solutions, and related information:
Cause: Data Migration Issues: This error typically occurs during data migration processes where certain entries in the database are expected to be present but are missing or have been deleted. Configuration Errors: There may be misconfigurations in the conversion settings or routines that lead to the deletion of these entries. Inconsistent Data: If the data being migrated is inconsistent or does not meet the expected format, it can lead to the deletion of necessary entries. Custom Code: If there are custom routines or modifications in the system, they might inadvertently delete or alter the expected entries.
Solution: Check Migration Logs: Review the migration logs to identify any preceding errors
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV20551229 CNVFIELDS: Package=&1, read-only indicator set for &2
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV20551228 Following fields were excluded from deletion
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV20551231 CNVFIELDS: &1, &2: read-only was initialized and exclude indicator set
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV20551232 In &1: &2, &3, &4 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.