How To Fix RSAU188 - No source time char. assigned for reading master data from &1 (&2)

SAP Error Message - Details

• Message type: E = Error

• Message class: RSAU - Update rules

• Message number: 188

• Message text: No source time char. assigned for reading master data from &1 (&2)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSAU188 - No source time char. assigned for reading master data from &1 (&2) ?

  The SAP error message RSAU188 "No source time char. assigned for reading master data from &1 (&2)" typically occurs in the context of data extraction or data loading processes, particularly when working with SAP BW (Business Warehouse) or SAP BI (Business Intelligence). This error indicates that there is a missing assignment of a source time characteristic for the specified data source.
  Cause:
  
  Missing Time Characteristic Assignment: The error usually arises when the data source (e.g., InfoObject, DataSource) does not have a time characteristic assigned to it. This means that the system cannot determine the time period for which the master data is being read.
  Configuration Issues: There may be issues in the configuration of the InfoObjects or DataSources, where the time characteristics are not properly defined or linked.
  DataSource Settings: The DataSource settings may not include the necessary time characteristics, leading to this error during data extraction.
  
  Solution:
  
  
  Check DataSource Configuration:
  
  Go to the DataSource in the SAP BW system and check the settings.
  Ensure that the time characteristic is correctly assigned to the DataSource. You can do this by navigating to the DataSource in the Data Warehousing Workbench (transaction RSA1) and checking the "DataSource" tab.
  
  
  
  Assign Time Characteristics:
  
  If the time characteristic is missing, you need to assign it. This can typically be done in the DataSource settings by selecting the appropriate time characteristic (e.g., 0CALMONTH, 0CALYEAR) that corresponds to your data model.
  
  
  
  Check InfoObject Settings:
  
  If the DataSource is linked to an InfoObject, ensure that the InfoObject has the correct time characteristics defined. You can check this in the InfoObject maintenance (transaction RSD1).
  
  
  
  Re-activate DataSource:
  
  After making changes, it may be necessary to re-activate the DataSource. This can be done in the Data Warehousing Workbench.
  
  
  
  Test the Data Extraction:
  
  After making the necessary adjustments, test the data extraction process again to see if the error persists.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  RSA1: Data Warehousing Workbench
  RSD1: InfoObject Maintenance
  RSA3: DataSource Test
  
  
  Documentation: Refer to SAP Help documentation for detailed guidance on configuring DataSources and InfoObjects.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to this error message.
  
  If the problem persists after following these steps, it may be beneficial to consult with your SAP Basis or BW team for further investigation, as there may be underlying issues with the data model or system configuration.