How To Fix WV556 - Start XPRA: transfer of document schema data from table TWPA to TWRPGP

SAP Error Message - Details

• Message type: E = Error

• Message class: WV - Messages about Sales Price Calculation

• Message number: 556

• Message text: Start XPRA: transfer of document schema data from table TWPA to TWRPGP

Self-Explanatory Message

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• What is the cause and solution for SAP error message WV556 - Start XPRA: transfer of document schema data from table TWPA to TWRPGP ?

  The SAP error message WV556 indicates an issue during the execution of an XPRA (cross-application program) that is responsible for transferring document schema data from the table TWPA to TWRPGP. This typically occurs during system upgrades or migrations, particularly when moving from older versions of SAP to newer ones.
  Cause:
  
  Data Inconsistency: There may be inconsistencies or corruption in the data within the TWPA table that prevents the XPRA from executing successfully.
  Missing Data: Required data in the TWPA table might be missing or incomplete, which can lead to errors during the transfer process.
  Configuration Issues: Incorrect configuration settings or missing authorizations can also lead to this error.
  System Environment: Issues related to the system environment, such as insufficient memory or disk space, can cause the XPRA to fail.
  
  Solution:
  
  Check Logs: Review the detailed logs for the XPRA execution to identify the specific cause of the error. You can do this by checking transaction SLG1 for application logs or using transaction SM21 for system logs.
  Data Consistency Check: Perform a consistency check on the TWPA table to ensure that all required data is present and correct. You can use transaction SE11 to view the table and check for anomalies.
  Manual Data Transfer: If the XPRA continues to fail, you may need to manually transfer the data from TWPA to TWRPGP. This should be done with caution and ideally under the guidance of an SAP Basis consultant.
  Run XPRA in Background: Sometimes, running the XPRA in the background can help bypass certain issues. You can do this by using transaction SE38 or SA38 and executing the XPRA program in the background.
  Check Authorizations: Ensure that the user executing the XPRA has the necessary authorizations to perform the data transfer.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or updates available that resolve known issues with the XPRA.
  Contact SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance.
  
  Related Information:
  
  XPRA Programs: These are programs that are executed during system upgrades to migrate data and settings from one version of SAP to another.
  Tables TWPA and TWRPGP: TWPA is typically used for storing document schema data, while TWRPGP is the target table for the migrated data.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11 (Data Dictionary), SLG1 (Application Log), SM21 (System Log), and SE38/SA38 (ABAP Program Execution).
  
  Always ensure that you have a backup of your data before performing any manual interventions or migrations.