How To Fix JA108 - Interval finish already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: JA - Central error messages, project system

• Message number: 108

• Message text: Interval finish already exists

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message JA108 - Interval finish already exists ?

  The SAP error message JA108 "Interval finish already exists" typically occurs in the context of SAP's Project System (PS) or other modules that deal with scheduling and planning. This error indicates that there is an attempt to create or modify a time interval that overlaps with an existing interval in the system.
  Cause:
  
  
  Overlapping Time Intervals: The most common cause of this error is that the system is trying to create a new interval that overlaps with an existing one. This can happen when you are trying to schedule a task or activity that has a start and finish time that conflicts with another task or activity already scheduled in the system.
  
  
  Incorrect Data Entry: Sometimes, the error can arise from incorrect data entry, where the user inadvertently inputs a finish date that is the same as or overlaps with an existing finish date.
  
  
  Configuration Issues: In some cases, the configuration settings in the system may not allow for overlapping intervals, leading to this error.
  
  
  Solution:
  
  
  Check Existing Intervals: Review the existing intervals in the system to identify any that overlap with the interval you are trying to create or modify. You can do this by navigating to the relevant transaction or report that displays the intervals.
  
  
  Adjust Dates: If you find that the interval you are trying to create overlaps with an existing one, adjust the start and/or finish dates of the new interval to ensure that it does not conflict with existing intervals.
  
  
  Delete or Modify Existing Intervals: If the existing interval is no longer needed, you may consider deleting or modifying it to free up the time slot for the new interval.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on managing intervals in the context of your specific module (e.g., Project System, Production Planning).
  
  
  Check Configuration: If you suspect that the issue may be related to system configuration, consult with your SAP Basis or configuration team to ensure that the settings allow for the desired scheduling behavior.
  
  
  Related Information:
  
  Transaction Codes: Depending on the module you are working in, you may use transaction codes like CJ20N (Project Builder), CJ02 (Change Project), or others to manage projects and their intervals.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions to common problems.
  User Forums: Consider visiting SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  If the problem persists after trying the above solutions, it may be beneficial to reach out to your SAP support team for further assistance.