How To Fix CJ757 - First character is already used in 'automatic number assignment'

CJ757 - Overview

• Message type: E = Error

• Message class: CJ - Project master data and structure

• Message number: 757

• Message text: First character is already used in 'automatic number assignment'

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CJ757 - First character is already used in 'automatic number assignment' ?

  The SAP error message CJ757, which states "First character is already used in 'automatic number assignment'," typically occurs in the context of project management within SAP, particularly when dealing with project definitions or WBS (Work Breakdown Structure) elements. This error indicates that the first character of the project number or WBS element you are trying to create is already in use, which violates the rules set for automatic number assignment.
  
  Cause:
  
  Duplicate First Character: The first character of the project number or WBS element you are trying to create is already assigned to another project or WBS element in the system.
  Number Range Configuration: The configuration for number ranges in the system may not allow for the first character you are trying to use.
  Custom Number Ranges: If your organization has custom number ranges set up, the first character may be restricted based on those settings.
  
  
  Solution:
  
  
  Check Existing Projects/WBS Elements: Verify if there are existing