Message type: E = Error
Message class:  CNV20551 - message for package 20551 (company code delete) 
Message number: 339
Message text: Inserted in CNV_20551_TSTRUC for J_OBJNR wth OBART=&1:OFFS=&2,ROLLNAME=&3
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 CNV20551339 typically relates to issues encountered during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This specific error indicates that there is a problem with the insertion of data into the table CNV_20551_TSTRUC, which is part of the data conversion framework.
Cause: The error message CNV20551339 suggests that there is an issue with the parameters being passed during the data insertion process. The placeholders in the message (J_OBJNR, OBART, OFFS, and ROLLNAME) indicate that specific values are not being handled correctly. Common causes for this error include: Data Integrity Issues: The data being migrated may not meet the required format or constraints for the target structure. Configuration Errors: There may be misconfigurations in the migration settings or mapping rules. Missing or Incorrect Data: Required fields may be missing or contain invalid data. Technical Issues: There could be underlying technical issues with the database or
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV20551338 &: Index table is excluded from deletion; no relev. domain in field SRTFD
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV20551337 INTR_FLD=&1,PARAM=&2: Structure information is missing
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV20551340 J_OBJNR,OBART=& must be defined in CNV_20551_OBJ and CNV_20551_DERIV
What causes this issue?  The object type J_OBJNR must still be made known to CNV_20551_OBJ - with a suitable SEQNUM value. Otherwise, this object is i...
CNV20551341 Analysis of index tables:
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.