How To Fix /LTB/JOB021 - Return code for function module JOB_OPEN is &1 (SY-SUBRC = &1)

SAP Error Message - Details

• Message type: E = Error

• Message class: /LTB/JOB -

• Message number: 021

• Message text: Return code for function module JOB_OPEN is &1 (SY-SUBRC = &1)

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 /LTB/JOB021 - Return code for function module JOB_OPEN is &1 (SY-SUBRC = &1) ?

  The SAP error message /LTB/JOB021 Return code for function module JOB_OPEN is &1 (SY-SUBRC = &1) typically indicates an issue with the job scheduling process in SAP, specifically when trying to open a job using the function module JOB_OPEN. The return code (&1) provides information about the nature of the error.
  Possible Causes:
  
  Job Name Conflicts: The job name you are trying to use may already be in use or may not meet the naming conventions.
  Authorization Issues: The user executing the job may not have the necessary authorizations to create or manage background jobs.
  System Configuration: There may be issues with the system configuration or settings related to background processing.
  Resource Limitations: The system may be experiencing resource limitations, such as memory or processing power, which can prevent jobs from being opened.
  Function Module Issues: There may be a problem with the function module itself, such as it being incorrectly implemented or having bugs.
  
  Solutions:
  
  Check Job Name: Ensure that the job name is unique and adheres to the naming conventions set by your organization.
  Review Authorizations: Verify that the user has the necessary authorizations to create and manage background jobs. You can check this in transaction SU53 or by reviewing the user's roles and profiles.
  System Configuration: Check the system configuration for background processing. This can include reviewing settings in transaction SM37 (Job Monitoring) and ensuring that the background processing is properly configured.
  Monitor System Resources: Use transaction ST02 (Tune Summary) or ST06 (Operating System Monitor) to check for any resource bottlenecks that may be affecting job processing.
  Debugging: If you have access to debugging tools, you can debug the function module JOB_OPEN to see where it is failing and why it is returning the specific code.
  Check SAP Notes: Look for any relevant SAP Notes that may address known issues with the JOB_OPEN function module or job scheduling in general.
  
  Related Information:
  
  Transaction Codes: 
  
  SM37: Job Monitoring
  SM36: Define Background Job
  SM21: System Log
  ST22: Dump Analysis
  
  
  SAP Notes: Search the SAP Support Portal for notes related to job scheduling and the specific return codes you encounter.
  Documentation: Review the SAP Help Portal for documentation on background processing and job scheduling.
  
  If the issue persists after trying the above solutions, consider reaching out to your SAP Basis team or SAP support for further assistance.