How To Fix UR157 - An init. or delta request is already running for this DataSource

UR157 - Overview

• Message type: E = Error

• Message class: UR -

• Message number: 157

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

Self-Explanatory Message

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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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UR157 - Details

• The SAP error message UR157 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) or SAP Data Services when trying to load data from a source system into the BW system.
  
  Cause:
  
  
  Concurrent Requests: The error usually arises when there is an attempt to start a new data load (initialization or delta) for a DataSource that is already being processed. This can happen if:
  
  A previous data load is still in progress.
  A previous request has not completed or has been stuck due to some issue.
  Multiple processes are trying to load data simultaneously for the same DataSource.
  
  
  
  Long Running Processes: Sometimes, the previous request may take longer than expected due to large volumes of data, network issues, or performance bottlenecks.
  
  
  System Configuration: The system may be configured to allow only one request at a time for a specific DataSource.
  
  
  
  Solution:
  
  
  Check Running