How To Fix WRF_REF144 - Par. proc.: Server group &1, max. num. task &2, avail. &3, paket size &4

SAP Error Message - Details

• Message type: E = Error

• Message class: WRF_REF - Messages from References for Materials Without History

• Message number: 144

• Message text: Par. proc.: Server group &1, max. num. task &2, avail. &3, paket size &4

What causes this issue?

This information message shows the parameters used for parallel
processing

System Response

The following parameters are used for parallelization:
Server group: &V1&
Maximum number of parallel tasks requested by user: &V2&
Maximum number of parallel tasks available: &V3&
Packet size requested by user: &V4&

How to fix this error?

For information only

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WRF_REF144 - Par. proc.: Server group &1, max. num. task &2, avail. &3, paket size &4 ?

  The SAP error message WRF_REF144 typically relates to issues with the configuration of the server group and the processing of tasks in the SAP system, particularly in the context of the SAP Advanced Planning and Optimization (APO) module or similar applications.
  Cause:
  The error message indicates that there is a problem with the task processing in a specific server group. The parameters in the message provide information about:
  
  Server group (&1): The name of the server group where the error occurred.
  Max. num. task (&2): The maximum number of tasks that can be processed in that server group.
  Avail. (&3): The number of tasks currently available for processing.
  Packet size (&4): The size of the data packets being processed.
  
  The error can occur due to:
  
  Configuration Issues: The server group may not be configured correctly, leading to an imbalance between the maximum number of tasks and the available tasks.
  Resource Limitations: The system may be running out of resources (e.g., memory, CPU) to handle the tasks.
  High Load: There may be too many tasks being sent to the server group at once, exceeding its capacity.
  Network Issues: Problems with network connectivity can also lead to task processing failures.
  
  Solution:
  To resolve the WRF_REF144 error, consider the following steps:
  
  
  Check Server Group Configuration:
  
  Review the configuration of the server group in the SAP system. Ensure that the maximum number of tasks is set appropriately based on the system's capacity and workload.
  
  
  
  Monitor System Resources:
  
  Use transaction codes like ST02 (Buffer Monitor), ST06 (Operating System Monitor), or SM50 (Process Overview) to monitor system performance and resource usage. Identify any bottlenecks or resource shortages.
  
  
  
  Adjust Task Distribution:
  
  If the server group is overloaded, consider redistributing tasks to other server groups or increasing the maximum number of tasks allowed in the current group.
  
  
  
  Review Background Jobs:
  
  Check for any long-running background jobs that may be consuming resources and impacting the processing of tasks.
  
  
  
  Network Check:
  
  Ensure that there are no network issues affecting communication between the application server and the database or other components.
  
  
  
  Consult SAP Notes:
  
  Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  
  
  
  Increase Packet Size:
  
  If applicable, consider adjusting the packet size to optimize the processing of tasks.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM37 (Job Monitoring), SM21 (System Log), and ST22 (Dump Analysis) for further investigation.
  SAP Documentation: Refer to the official SAP documentation for detailed information on server group configuration and task processing.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  If the problem persists after following these steps, it may be necessary to involve SAP support for further assistance.