How To Fix PMRP057 - Durations cannot be negative

SAP Error Message - Details

• Message type: E = Error

• Message class: PMRP - Messages for pMRP

• Message number: 057

• Message text: Durations cannot be negative

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message PMRP057 - Durations cannot be negative ?

  The SAP error message PMRP057, which states "Durations cannot be negative," typically occurs in the context of project management or production planning within the SAP system. This error indicates that a duration value that has been entered or calculated is negative, which is not permissible in the context of scheduling or planning.
  Causes:
  
  Incorrect Data Entry: A user may have inadvertently entered a negative value for a duration field, such as task duration, lead time, or processing time.
  Calculation Errors: If the duration is derived from calculations (e.g., start date minus end date), it may result in a negative value if the dates are incorrectly set.
  Dependencies and Constraints: If there are dependencies or constraints set on tasks that lead to a situation where a task is scheduled to start after it is supposed to end, it can result in negative durations.
  Configuration Issues: There may be issues with the configuration of the project or production planning settings that lead to incorrect duration calculations.
  
  Solutions:
  
  Check Input Values: Review the input values for the duration fields to ensure that they are all positive. Correct any negative values that have been entered.
  Review Dates: Check the start and end dates of tasks or activities to ensure they are set correctly. Ensure that the start date is earlier than the end date.
  Examine Dependencies: Look at the dependencies between tasks to ensure that they are logically set up. Adjust any dependencies that may lead to negative durations.
  Recalculate Durations: If the durations are calculated based on other fields, ensure that the underlying data is correct and recalculate the durations.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on the module you are working with, as there may be additional context-specific solutions.
  System Configuration: If the issue persists, consult with your SAP administrator or technical team to review the system configuration and ensure that it is set up correctly.
  
  Related Information:
  
  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.
  Transaction Codes: Familiarize yourself with relevant transaction codes (e.g., CJ20N for project management, CO01 for production orders) to navigate to the areas where the error may be occurring.
  User Training: Ensure that users are trained on proper data entry and the implications of negative values in project management and production planning.
  
  By following these steps, you should be able to identify the cause of the PMRP057 error and implement a solution to resolve it.