How To Fix WRF_AT_GENERATE302 - Number of parallel processes is empty -> no parallel processing

SAP Error Message - Details

• Message type: E = Error

• Message class: WRF_AT_GENERATE - Messages: Allocation Table Generation RTFASH/Ordering

• Message number: 302

• Message text: Number of parallel processes is empty -> no parallel processing

Self-Explanatory Message

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• What is the cause and solution for SAP error message WRF_AT_GENERATE302 - Number of parallel processes is empty -> no parallel processing ?

  SAP Error Message:
  
  WRF_AT_GENERATE302 Number of parallel processes is empty -> no parallel processing
  
  Cause
  This error occurs when a process or report in SAP that supports parallel processing is triggered, but the system does not have a configured or specified number of parallel processes to execute. Essentially, the parameter or setting that defines how many parallel jobs should run is either missing, set to zero, or not properly maintained.
  In many SAP background or batch jobs, especially those related to workflow, archiving, or data processing, parallel processing is used to improve performance. If the system expects a number of parallel processes but finds none defined, it raises this error.
  
  Where it typically occurs
  
  Workflow runtime or workflow-related batch jobs.
  Archiving jobs or data processing jobs that support parallel execution.
  Custom programs or standard SAP reports that use parallel processing framework.
  
  
  Solution
  
  
  Check the Parallel Processing Parameter:
  
  Identify the parameter or configuration that controls the number of parallel processes for the specific job or program.
  This could be a variant parameter, a customizing setting, or a program input parameter.
  
  
  
  Set the Number of Parallel Processes:
  
  If the job is scheduled via transaction SM36 (Job Scheduling), check the job variant or parameters.
  If the job uses a variant, open the variant and set the number of parallel processes to a value greater than zero.
  For workflow or archiving jobs, check the relevant customizing or configuration tables.
  
  
  
  Check Program Documentation or SAP Notes:
  
  Some programs require explicit setting of parallel processes.
  Refer to the program documentation or SAP Notes for the recommended values.
  
  
  
  Example:
  
  If the job is a workflow runtime job, check the workflow customizing under SWU3 or related transactions.
  For archiving, check the archive object customizing and job variants.
  
  
  
  Restart the Job:
  
  After setting the number of parallel processes, restart the job or report.
  
  
  
  
  Additional Information
  
  
  Transaction Codes to Check:
  
  SM36 - Job scheduling
  SM37 - Job monitoring
  SWU3 - Workflow runtime customizing
  SARA - Archive administration
  
  
  
  SAP Notes:
  
  Search SAP Support Portal for notes related to WRF_AT_GENERATE302 or parallel processing errors in the specific module you are working with.
  
  
  
  Debugging:
  
  If you have access to ABAP debugging, check the program logic where the number of parallel processes is read.
  Look for the variable or parameter that holds this value and why it is empty or zero.
  
  
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Number of parallel processes parameter is empty or zero, causing no parallel processing.
  
  
  Effect
  Job or report cannot start parallel processing, leading to error WRF_AT_GENERATE302.
  
  
  Solution
  Set the number of parallel processes to a valid number (>0) in job variant or customizing.
  
  
  Where to Check
  Job variants, customizing tables, workflow or archiving settings, program parameters.
  
  
  Tools
  SM36, SM37, SWU3, SARA, ABAP debugger.
  
  
  
  
  If you provide the exact program or job name, I can help you with more specific instructions on where to set the parallel process count.