How To Fix RD157 - An init or delta request is already running for this DataSource

SAP Error Message - Details

• Message type: E = Error

• Message class: RD - CO-PA Connection to SAP BW

• Message number: 157

• Message text: An init or delta request is already running for this DataSource

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RD157 - An init or delta request is already running for this DataSource ?

  The SAP error message RD157 indicates that an initialization or delta request is already running for a specific DataSource. This typically occurs in the context of SAP BW (Business Warehouse) when trying to load data from a source system into the BW system, and it can prevent new data loads from being initiated for that DataSource until the current process is completed.
  
  Cause:
  
  
  Concurrent Requests: The most common cause of this error is that there is already an active initialization or delta load process for the same DataSource. This can happen if:
  
  A previous data load is still in progress.
  A previous load has not been properly terminated or has hung.
  Multiple processes are trying to load data simultaneously for the same DataSource.
  
  
  
  System Locking: The system may have a locking mechanism that prevents multiple requests from being processed at the same time for the same DataSource.
  
  
  
  Solution:
  
  
  Check Active Requests:
  
  Go to the transaction code RSA1 (Data Warehousing