How To Fix TN644 - Reading initial component vector of export DVD &1 &2 (&3)

SAP Error Message - Details

• Message type: E = Error

• Message class: TN - Support Package Manager (SPAM) Messages

• Message number: 644

• Message text: Reading initial component vector of export DVD &1 &2 (&3)

Self-Explanatory Message

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message TN644 - Reading initial component vector of export DVD &1 &2 (&3) ?

  The SAP error message TN644, which states "Reading initial component vector of export DVD &1 &2 (&3)," typically occurs during the import of a transport request or when trying to access a specific component in the SAP system. This error can be related to issues with the transport directory, the transport files, or the configuration of the transport management system.
  Causes:
  
  Corrupted Transport Files: The transport files may be corrupted or incomplete, which can happen during the export or import process.
  Incorrect Transport Directory Configuration: The transport directory may not be correctly configured, leading to issues in locating the necessary files.
  Missing Components: The components referenced in the transport request may not exist in the target system.
  Version Mismatch: There may be a version mismatch between the source and target systems, causing compatibility issues.
  Authorization Issues: The user performing the import may not have the necessary authorizations to access the transport files.
  
  Solutions:
  
  Check Transport Files: Verify that the transport files are complete and not corrupted. You can do this by checking the transport directory and ensuring all necessary files are present.
  Reconfigure Transport Directory: Ensure that the transport directory is correctly configured in the SAP system. You can check the configuration in transaction STMS.
  Check Component Availability: Make sure that all components referenced in the transport request are available in the target system. If they are missing, you may need to install them or adjust the transport request.
  Review Version Compatibility: Ensure that the source and target systems are compatible in terms of version and support packages. If there is a significant difference, consider upgrading or aligning the systems.
  User Authorizations: Check the authorizations of the user performing the import. Ensure that they have the necessary permissions to access and import the transport requests.
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like STMS (Transport Management System) to manage transports and check the status of transport requests.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to the TN644 error.
  Logs and Traces: Check the transport logs and system logs for more detailed error messages that can provide additional context for troubleshooting.
  
  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 steps you have already taken.