How To Fix WSTI_CALC023 - Par. proc.: server grp. &1, max. procs &2, available &3, packet size &4

SAP Error Message - Details

• Message type: E = Error

• Message class: WSTI_CALC - Physical Inventory Messages: Book Inv. Calc. at Count Time

• Message number: 023

• Message text: Par. proc.: server grp. &1, max. procs &2, available &3, packet size &4

What causes this issue?

This information message indicates the parameters that are used in
parallel processing.

System Response

The following parameters are used for parallel processing:
Server group: &V1&
Maximum number of parallel processes according to user profile: &V2&
Maximum number of available processes: &V3&
Package size according to user profile: &V4&

How to fix this error?

INCLUDE ISR_INFORMATION

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WSTI_CALC023 - Par. proc.: server grp. &1, max. procs &2, available &3, packet size &4 ?

  Certainly! Here's a detailed explanation of the SAP error message:
  
  SAP Error Message:
  WSTI_CALC023
  
  Text: Par. proc.: server grp. &1, max. procs &2, available &3, packet size &4
  
  Meaning / Cause:
  This message relates to the parallel processing framework in SAP, specifically the distribution of work processes in a server group.
  
  server grp. &1: The name of the server group involved.
  max. procs &2: The maximum number of processes configured for this server group.
  available &3: The number of currently available (free) work processes in the server group.
  packet size &4: The size of the packet (number of tasks) to be processed in parallel.
  
  The error or warning indicates that the system is trying to allocate parallel processing tasks (packets) to a server group, but the number of available work processes is less than the packet size or there is some mismatch in the expected parallel processing capacity.
  Typical causes:
  
  The server group does not have enough free work processes to handle the requested parallel processing packet size.
  The packet size configured is too large relative to the available work processes.
  Work processes in the server group are busy or blocked.
  Incorrect or suboptimal configuration of the server group or parallel processing parameters.
  System load is high, reducing the number of free work processes.
  
  
  Solution / Recommendations:
  
  
  Check Work Process Availability:
  
  Use transaction SM51 to check the active application servers and their work processes.
  Use SM50 or SM66 to monitor work process status and see if processes are busy or stuck.
  
  
  
  Adjust Packet Size:
  
  Reduce the packet size parameter to a value less than or equal to the number of available work processes.
  Packet size is often set in the program or in the parallel processing framework parameters.
  
  
  
  Increase Work Processes:
  
  If the server group consistently has insufficient free work processes, consider increasing the number of dialog or background work processes in the instance profile parameters (rdisp/wp_no_dia, rdisp/wp_no_btc).
  Restart the instance after profile changes.
  
  
  
  Optimize Server Group Configuration:
  
  Verify the server group definition in transaction SM61 or RZ12.
  Ensure the server group includes the correct application servers with sufficient capacity.
  
  
  
  Load Balancing:
  
  Distribute the workload more evenly across servers or server groups.
  Avoid overloading a single server group.
  
  
  
  Check for Stuck or Long-Running Processes:
  
  Identify and resolve any stuck or long-running work processes that reduce availability.
  
  
  
  Review Parallel Processing Program Logic:
  
  If you are developing or running a custom parallel processing program, ensure that the packet size and server group usage are correctly implemented.
  
  
  
  
  Additional Information:
  
  This message is informational or a warning rather than a critical error, but it indicates potential performance or resource allocation issues.
  Parallel processing in SAP is used to improve performance by distributing tasks across multiple work processes and servers.
  Proper sizing and configuration of work processes and server groups are essential for efficient parallel processing.
  Refer to SAP Note(s) related to parallel processing and server group configuration for your specific SAP version if needed.
  
  
  If you provide the exact context or transaction/program where this message appears, I can help with more tailored advice.