Message type: E = Error
Message class:  CNV20551 - message for package 20551 (company code delete) 
Message number: 277
Message text: Table CNV_20551_TSTRUCT for INTR_FLD = & is empty
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 CNV20551277 related to the table CNV_20551_TSTRUCT typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that a specific field (INTR_FLD) is empty, which is causing issues in the data processing.
Cause: Missing Data: The field specified by INTR_FLD is expected to contain data, but it is empty. This could be due to incomplete data extraction or transformation processes. Mapping Issues: There may be a problem with the mapping of fields from the source system to the target system, leading to empty fields in the target. Configuration Errors: Incorrect configuration settings in the migration tool or the data model can lead to this error. Data Quality Issues: The source data may have quality issues, such as missing values or incorrect formats.
Solution: Check Source Data: Review the source data to ensure that the field corresponding to INTR_FLD is populated. If it
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV20551276 No inconsistencies found
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV20551275 Analysis of the existing CO object numbers (in table ONR00):
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV20551278 &1 : Domain &2 is longer than target field; content will be cut off
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV20551279 Table &1 was activated
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.