How To Fix /SAPAPO/TDL_DAO099 - Error reading from data source &1

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/TDL_DAO -

• Message number: 099

• Message text: Error reading from data source &1

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 /SAPAPO/TDL_DAO099 - Error reading from data source &1 ?

  The SAP error message /SAPAPO/TDL_DAO099 Error reading from data source &1 typically occurs in the context of SAP Advanced Planning and Optimization (APO) when there is an issue with reading data from a specified data source. This error can arise due to various reasons, including configuration issues, data inconsistencies, or connectivity problems.
  Causes:
  
  Data Source Configuration: The data source specified in the error message may not be correctly configured or may not exist.
  Authorization Issues: The user may not have the necessary authorizations to access the data source.
  Data Inconsistencies: There may be inconsistencies or corruption in the data stored in the data source.
  Network Issues: There could be network connectivity problems that prevent access to the data source.
  System Performance: If the system is under heavy load, it may lead to timeouts or failures in reading data.
  
  Solutions:
  
  
  Check Data Source Configuration:
  
  Verify that the data source specified in the error message is correctly configured in the system.
  Ensure that the data source is active and available.
  
  
  
  Review Authorizations:
  
  Check the user authorizations to ensure that the user has the necessary permissions to access the data source.
  If needed, adjust the authorization roles accordingly.
  
  
  
  Data Consistency Check:
  
  Perform a consistency check on the data in the data source to identify and resolve any inconsistencies or corruption.
  Use transaction codes like SLG1 to check for logs related to the error.
  
  
  
  Network Connectivity:
  
  Ensure that there are no network issues preventing access to the data source.
  Check the connection settings and test the connectivity to the data source.
  
  
  
  System Performance:
  
  Monitor system performance and check for any bottlenecks that may be affecting data retrieval.
  If the system is under heavy load, consider optimizing performance or scheduling data retrieval during off-peak hours.
  
  
  
  Check Logs:
  
  Review the application logs for more detailed error messages that can provide additional context about the issue.
  Use transaction SLG1 to view application logs related to the error.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. You can search for relevant notes in the SAP Support Portal.
  Documentation: Refer to the SAP APO documentation for detailed information on data sources and their configuration.
  Community Forums: Engage with SAP community forums or user groups to see if others have encountered similar issues and how they resolved them.
  
  If the issue persists after trying the above solutions, it may be necessary to involve your SAP Basis or technical support team for further investigation.