How To Fix /SAPAPO/ND401 - Error during allocation of memory space

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/ND -

• Message number: 401

• Message text: Error during allocation of memory space

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/ND401 - Error during allocation of memory space ?

  The SAP error message /SAPAPO/ND401 Error during allocation of memory space typically indicates that the system is unable to allocate the required memory for a process in the SAP Advanced Planning and Optimization (APO) module. This can occur due to various reasons, including insufficient memory resources, configuration issues, or system limitations.
  Causes:
  
  Insufficient Memory: The most common cause is that the SAP system does not have enough memory allocated to handle the current workload.
  Memory Configuration: Incorrect configuration of the SAP memory parameters (like abap/heap_area_total, abap/heap_area_dia, etc.) can lead to memory allocation issues.
  High Load: A sudden increase in workload or data volume can lead to memory exhaustion.
  Memory Leaks: Certain processes or custom code may have memory leaks, consuming more memory than necessary.
  System Limits: The underlying operating system or database may have limits on memory usage that are being exceeded.
  
  Solutions:
  
  
  Increase Memory Allocation:
  
  Review and increase the memory parameters in the SAP profile. You can adjust parameters like abap/heap_area_total and abap/heap_area_dia to allocate more memory to the ABAP runtime environment.
  Use transaction RZ10 to change the profile parameters and restart the system for changes to take effect.
  
  
  
  Monitor Memory Usage:
  
  Use transaction ST02 (Tune Summary) to monitor memory usage and identify any bottlenecks or areas where memory is being consumed excessively.
  Check for any long-running processes or background jobs that may be consuming memory.
  
  
  
  Optimize Code:
  
  Review custom ABAP code or any enhancements that may be causing memory leaks or excessive memory consumption.
  Optimize data processing logic to reduce memory usage.
  
  
  
  System Resources:
  
  Ensure that the underlying hardware has sufficient resources (RAM, CPU) to support the SAP system's requirements.
  If necessary, consider upgrading the hardware or moving to a more powerful server.
  
  
  
  Database Configuration:
  
  Check the database settings and ensure that it is configured to handle the expected load and memory requirements.
  
  
  
  SAP Notes:
  
  Check for any relevant SAP Notes that may address this specific error or provide patches and updates that could resolve memory allocation issues.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  ST02 - Tune Summary for monitoring memory.
  SM50 - Process Overview to check running processes.
  RZ10 - Profile parameter maintenance.
  
  
  
  SAP Documentation: Refer to SAP Help Portal for detailed documentation on memory management and configuration.
  
  
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  
  If the problem persists after trying the above solutions, it may be necessary to consult with SAP support for further assistance.