How To Fix /SAPAPO/ATP028 - Unidentified error during data reading in logical system &1

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/ATP -

• Message number: 028

• Message text: Unidentified error during data reading in logical system &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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/ATP028 - Unidentified error during data reading in logical system &1 ?

  The SAP error message /SAPAPO/ATP028 indicates that there is an unidentified error occurring during data reading in a logical system. This error is typically related to the Advanced Planning and Optimization (APO) module in SAP, particularly in the context of Available-to-Promise (ATP) checks.
  Possible Causes:
  
  Data Inconsistency: There may be inconsistencies in the master data or transaction data that the system is trying to read.
  Configuration Issues: Incorrect configuration settings in the APO system or in the logical system settings can lead to this error.
  Network Issues: Problems with the network connection between the systems can cause data reading failures.
  Authorization Issues: The user or system may not have the necessary authorizations to access the required data.
  System Performance: High load on the system or performance issues can lead to timeouts or failures in data retrieval.
  Transport Issues: If the data was recently transported from another system, there may be issues with the transport itself.
  
  Solutions:
  
  Check Data Consistency: Verify the integrity of the master and transaction data. Use transaction codes like CIF (Core Interface) to check for inconsistencies.
  Review Configuration: Ensure that the configuration settings for the logical system and APO are correct. Check the settings in transaction SPRO and ensure that all necessary configurations are in place.
  Network Troubleshooting: Check the network connectivity between the systems involved. Ensure that there are no firewalls or network issues blocking communication.
  Authorization Check: Verify that the user or system has the necessary authorizations to access the data. Use transaction SU53 to analyze authorization issues.
  Monitor System Performance: Use transaction ST22 to check for dumps and SM21 for system logs to identify any performance-related issues.
  Re-transport Data: If the issue arose after a transport, consider re-transporting the data or checking the transport logs for errors.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to this error message for any specific patches or updates that may address the issue.
  Transaction Logs: Review transaction logs for more detailed error messages that can provide additional context.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, providing them with detailed information about the error and the context in which it occurs.
  
  By following these steps, you should be able to identify the root cause of the error and implement a suitable solution.