How To Fix CNV_PE_POST850 - Importing the data of parameter &1 from the transfer list failed

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE_POST -

• Message number: 850

• Message text: Importing the data of parameter &1 from the transfer list failed

What causes this issue?

The transfer of a worklist item done via RFC into the corresponding
target system. The data exchange of the relevant data into the target
system is done in a compressed format which will then be uncompressed in
the target system itself.
Trying to uncompress the relevant data of parameter <ZH>&V1&</> failed.
A reason for the error could be that after generating all required
runtime and DDIC objects for the transfer, the data structure/definition
of the relevant parameter has changed (for example, a field was added,
the definition of a field was changed, and so on).

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

The problem could also be a temporary problem, therefore try to do the
transfer again. If the error still exists, check if the data definition
of parameter <ZH>&V1&</> has changed since the generation of the runtime
and DDIC objects.
If yes, regenerate the following objects and start the transfer
afterwards again:
DDIC objects of the transfer method (-> transfer list) that was used for
the transfer
Post function for the transfer

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_PE_POST850 - Importing the data of parameter &1 from the transfer list failed ?

  The SAP error message CNV_PE_POST850 indicates that there was a failure in importing data for a specific parameter from the transfer list during a data migration or conversion process. This error is typically encountered in the context of SAP's data migration tools, such as the SAP S/4HANA Migration Cockpit or other data transfer processes.
  Causes:
  
  Data Format Issues: The data being imported may not conform to the expected format or structure required by the target system.
  Missing Data: Required fields or parameters may be missing from the transfer list, leading to incomplete data import.
  Inconsistent Data: The data in the transfer list may have inconsistencies or conflicts that prevent successful import.
  Authorization Issues: The user executing the import may not have the necessary authorizations to perform the operation.
  Technical Errors: There could be underlying technical issues, such as database connectivity problems or system resource limitations.
  
  Solutions:
  
  Check Data Format: Review the data in the transfer list to ensure it matches the expected format and structure. Correct any discrepancies.
  Validate Data Completeness: Ensure that all required fields and parameters are present in the transfer list. Fill in any missing data.
  Resolve Inconsistencies: Identify and resolve any data inconsistencies or conflicts. This may involve cleaning or transforming the data before re-importing.
  Review Authorizations: Verify that the user has the necessary authorizations to perform the import. If not, adjust the user roles or permissions accordingly.
  Check Logs: Review the application logs or error logs for more detailed information about the failure. This can provide insights into the specific cause of the error.
  Retry the Import: After addressing the identified issues, attempt to re-import the data.
  
  Related Information:
  
  Transaction Codes: You may want to use transaction codes like SLG1 to check application logs or ST22 for dump analysis if the error is related to a system dump.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Documentation: Refer to the official SAP documentation for the data migration tool you are using, as it may contain specific guidelines and best practices for data import processes.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance, providing them with detailed information about the error and the context in which it occurred.