Message type: E = Error
Message class:  CNV_PE_CHECK - Check Framework messages for posting engine 
Message number: 284
Message text: Transfer method parameter structural mapping check
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 CNV_PE_CHECK284 typically relates to issues in the data transfer process, particularly when using the SAP Conversion Tools or during data migration activities. This error indicates that there is a problem with the structural mapping of the transfer method parameters.
Cause: The error can occur due to several reasons, including: Incorrect Mapping: The mapping between source and target structures may not be correctly defined. This can happen if the fields in the source do not match the expected fields in the target structure. Missing Fields: Required fields in the target structure may be missing from the source data, leading to inconsistencies. Data Type Mismatches: There may be discrepancies in data types between the source and target fields, which can cause the transfer to fail.
Configuration Issues: The configuration settings for the transfer method may not be set up correctly, leading to structural mapping errors.
Solution: To resolve the CNV_PE_CHECK284 error, you can follow these steps: Review
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV_PE_CHECK283 Transfer method parameter existence check
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_PE_CHECK282 Parameter &1 does not exist in data model &2
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_PE_CHECK285 Transfer method parameter relevance identifiers check
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_PE_CHECK286 Transfer method parameter data model assignment check
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.