How To Fix CJ851 - You can create only one project within one transaction

SAP Error Message - Details

• Message type: E = Error

• Message class: CJ - Project master data and structure

• Message number: 851

• Message text: You can create only one project within one transaction

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CJ851 - You can create only one project within one transaction ?

  The SAP error message CJ851 ("You can create only one project within one transaction") typically occurs when you attempt to create multiple projects in a single transaction in the Project System (PS) module of SAP. This restriction is in place to ensure data integrity and to avoid confusion in project management.
  Cause:
  
  Single Transaction Limitation: The system is designed to allow the creation of only one project at a time to maintain clarity and prevent errors in project data.
  User Action: The error may arise if a user tries to create multiple projects in a single session or transaction, either by using the same transaction code multiple times or by attempting to create sub-projects or related projects simultaneously.
  
  Solution:
  
  Create Projects Sequentially: Ensure that you create each project in a separate transaction. After completing the creation of one project, you can then start a new transaction to create another project.
  Check for Open Transactions: Make sure that there are no open transactions or sessions that are still in the process of creating a project. Close any unnecessary sessions before starting a new project creation.
  Use Different Sessions: If you need to create multiple projects, consider opening multiple sessions in SAP (using the menu option or the keyboard shortcut Ctrl + N) and create each project in its own session.
  Review User Authorizations: Ensure that your user role has the necessary authorizations to create projects. Sometimes, restrictions can be due to user permissions.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes in SAP for project creation, such as CJ01 (Create Work Breakdown Structure), CJ02 (Change Work Breakdown Structure), and CJ03 (Display Work Breakdown Structure).
  SAP Notes: Check SAP Notes for any updates or patches related to the Project System that might address this issue or provide additional guidance.
  Documentation: Refer to SAP documentation or user manuals for best practices in project creation and management within the Project System module.
  
  If the problem persists after following these steps, it may be beneficial to consult with your SAP administrator or support team for further assistance.