Message type: E = Error
Message class:  CNV20551 - message for package 20551 (company code delete) 
Message number: 207
Message text: Predecessor job & was not completed without errors
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 CNV20551207 indicates that a predecessor job in a conversion or migration process did not complete successfully, which is preventing the current job from proceeding. This error is typically encountered during data migration or system conversion activities, such as those involved in SAP S/4HANA migrations or other data transformation projects.
Cause: Predecessor Job Failure: The most common cause is that the job that should have run before the current job encountered an error and did not complete successfully. Data Issues: There may be issues with the data being processed, such as inconsistencies, missing data, or violations of data integrity constraints.
Configuration Issues: Incorrect configuration settings in the migration or conversion process can lead to job failures. Resource Limitations: Insufficient system resources (like memory or processing power) can cause jobs to fail.
Solution: Check Predecessor Job Logs: Review the logs of the predecessor job to identify the specific error that caused it to fail. This
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV20551206 EKORG = & not to be deleted; w/o CoCd assignment; not valid for any plant
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV20551205 Purch. org. & not to be deleted; is used exclusively by relevant plants
What causes this issue?  Cross-company code purchasing organization &V1& is not marked for deletion, but is used exclusively by plants that wi...
CNV20551208 &1= &2 not to be deleted; assigned to relevant organizational unit &3= &4
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV20551209 In &1 for &2=&3, no structure could be derived (missing in T681)
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.