How To Fix TN304 - From now: Import of types &2 &4 instead of types &1 &3

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 304

• Message text: From now: Import of types &2 &4 instead of types &1 &3

What causes this issue?

You have reset the flag for importing the component-specific type &V1&
&V3&. This also affects the type &V2& &V4&.

System Response

Instead of type &V1& &V3&, you are now allowed to import type &V2& &V4&
. Type &V1& &V3& can no longer be imported.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message TN304 - From now: Import of types &2 &4 instead of types &1 &3 ?

  The SAP error message TN304 typically occurs during the import of transport requests, particularly when there is a mismatch in the data types or structures being imported. This error indicates that the system is trying to import types that do not match the expected types, which can lead to inconsistencies in the data model.
  Cause:
  
  
  Type Mismatch: The error usually arises when the transport request contains types that are not compatible with the existing types in the target system. This can happen if:
  
  The source and target systems are not in sync.
  There have been changes to the data types or structures in the source system that have not been reflected in the target system.
  The transport request is importing types that have been modified or deleted in the target system.
  
  
  
  Version Differences: If the source and target systems are on different versions of SAP or if there are discrepancies in the installed components, this can lead to type mismatches.
  
  
  Missing Dependencies: Sometimes, the types being imported may depend on other types or objects that are not present in the target system.
  
  
  Solution:
  
  
  Check Transport Request: Review the transport request to ensure that it contains the correct types and that they are compatible with the target system.
  
  
  Synchronize Systems: Ensure that both the source and target systems are synchronized. This may involve:
  
  Importing any missing transport requests that contain necessary types or structures.
  Ensuring that the same version of SAP components is installed on both systems.
  
  
  
  Manual Adjustments: If necessary, you may need to manually adjust the types in the target system to match those in the source system. This can involve:
  
  Creating or modifying data types or structures in the target system.
  Deleting or adjusting conflicting types.
  
  
  
  Consult Documentation: Check SAP Notes and documentation for any known issues related to the specific types or structures involved in the transport request.
  
  
  Use Transaction SE01: You can use transaction SE01 to analyze the transport request and see if there are any inconsistencies or issues that need to be resolved.
  
  
  Contact SAP Support: If the issue persists and you cannot resolve it, consider reaching out to SAP support for assistance.
  
  
  Related Information:
  
  SAP Notes: Look for relevant SAP Notes that may address this specific error or provide guidance on similar issues.
  Transport Management System (TMS): Familiarize yourself with the TMS and its configuration, as it plays a crucial role in managing transports between systems.
  Development Guidelines: Follow best practices for development and transport management to minimize the risk of such errors in the future.
  
  By addressing the underlying causes and ensuring that the systems are properly synchronized, you can resolve the TN304 error and successfully import the required types.