How To Fix PN851 - Job could not be scheduled. Reason: &

SAP Error Message - Details

• Message type: E = Error

• Message class: PN -

• Message number: 851

• Message text: Job could not be scheduled. Reason: &

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message PN851 - Job could not be scheduled. Reason: & ?

  The SAP error message PN851 indicates that a job could not be scheduled due to a specific reason, which is represented by the placeholder "&". This error typically occurs in the context of background job scheduling in SAP systems.
  Possible Causes:
  
  Resource Constraints: The system may not have enough resources (CPU, memory, etc.) to schedule the job.
  Job Configuration Issues: There may be issues with the job configuration, such as incorrect parameters or missing prerequisites.
  System Load: The system might be under heavy load, causing it to reject new job scheduling requests.
  Authorization Issues: The user attempting to schedule the job may not have the necessary authorizations.
  Job Class Conflicts: The job class assigned to the job may not be available or may conflict with other scheduled jobs.
  Time Conflicts: The job may be scheduled at a time when other jobs are already running, leading to conflicts.
  
  Solutions:
  
  Check System Resources: Monitor system performance and resource availability. If resources are low, consider optimizing existing jobs or increasing system capacity.
  Review Job Configuration: Ensure that the job is configured correctly, including all necessary parameters and prerequisites.
  Adjust Scheduling Times: If the system is under heavy load, try scheduling the job during off-peak hours.
  Verify Authorizations: Check the user’s authorizations to ensure they have the necessary permissions to schedule the job.
  Review Job Classes: Ensure that the job class assigned to the job is available and does not conflict with other jobs.
  Check Job Logs: Review the job logs for any additional error messages or warnings that may provide more context on the failure.
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like SM37 (to monitor jobs) and SM36 (to create jobs) to manage background jobs.
  SAP Notes: Check SAP Notes for any known issues related to job scheduling and PN851 error. SAP Notes often provide specific fixes or workarounds.
  System Logs: Review system logs (transaction SM21) for any related error messages that might give more insight into the issue.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP Basis team or SAP support for further assistance.