How To Fix RSSM_TT039 - DTP &1 is part of a closed loop and writes to DTP &2

SAP Error Message - Details

• Message type: E = Error

• Message class: RSSM_TT - Transfer Tool

• Message number: 039

• Message text: DTP &1 is part of a closed loop and writes to DTP &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSSM_TT039 - DTP &1 is part of a closed loop and writes to DTP &2 ?

  The SAP error message RSSM_TT039 indicates that there is a closed loop in your Data Transfer Process (DTP) configuration. This typically occurs when a DTP is set up to write data to a target that is also being used as a source for another DTP, creating a circular dependency. This can lead to issues in data processing and integrity.
  Cause:
  
  Closed Loop Configuration: The DTP you are trying to execute is configured to write data to a target that is also being used as a source for another DTP. This creates a situation where the data flow is circular, which is not allowed in SAP BW.
  Incorrect DTP Settings: The settings for the DTPs may not be correctly defined, leading to unintended dependencies.
  
  Solution:
  
  Review DTP Configurations: Check the configurations of the DTPs involved. Identify the source and target of each DTP and ensure that they do not create a circular dependency.
  Modify DTPs: If you find that DTP &1 (the one causing the error) is writing to DTP &2 (the one it is reading from), consider modifying one of the DTPs to break the loop. This could involve changing the target of one of the DTPs or adjusting the data flow.
  Use Intermediate Objects: If necessary, introduce intermediate objects (like InfoProviders) to facilitate the data flow without creating a closed loop.
  Check for Process Chains: If these DTPs are part of a process chain, ensure that the process chain does not create a circular dependency as well.
  
  Related Information:
  
  DTP Documentation: Review SAP documentation on Data Transfer Processes to understand how to configure them correctly and avoid circular dependencies.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional guidance on DTP configurations.
  Testing: After making changes, test the DTPs to ensure that they work as expected without causing any errors.
  
  By carefully reviewing and adjusting the DTP configurations, you should be able to resolve the RSSM_TT039 error and ensure smooth data processing in your SAP BW environment.