How To Fix RA644 - End time is before start time

SAP Error Message - Details

• Message type: E = Error

• Message class: RA - Monitoring structure dialog message

• Message number: 644

• Message text: End time is before start time

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 RA644 - End time is before start time ?

  The SAP error message RA644 ("End time is before start time") typically occurs in the context of time management or scheduling within SAP, particularly in modules like SAP Project System (PS) or SAP Controlling (CO). This error indicates that the end time of a task, activity, or project is set to a time that is earlier than its start time, which is logically inconsistent.
  Cause:
  
  Incorrect Time Entry: The most common cause is that the user has entered the end time incorrectly, either by mistyping or misunderstanding the time format.
  Data Migration Issues: If data has been migrated from another system, there may be inconsistencies in the time entries.
  System Configuration: In some cases, system settings or configurations may lead to incorrect time calculations or defaults.
  User Error: Users may not be aware of the correct sequence of time entries, leading to this error.
  
  Solution:
  
  Check Time Entries: Review the start and end times for the relevant task or activity. Ensure that the end time is indeed later than the start time.
  Correct the Data: If you find that the end time is incorrect, update it to a valid time that is after the start time.
  Review Time Formats: Ensure that the time format being used is correct and consistent with the system settings.
  Consult Documentation: If the error persists, refer to SAP documentation or help resources for guidance on time entry procedures.
  User Training: Provide training for users on how to correctly enter time data to avoid future occurrences of this error.
  Check for System Bugs: If you suspect a system bug, consult with your SAP support team or check SAP notes for any known issues related to this error.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific patches or updates related to this error message.
  Transaction Codes: Familiarize yourself with relevant transaction codes (e.g., CJ20N for project management) where this error might occur.
  User Roles: Ensure that users have the appropriate roles and permissions to make changes to time entries.
  Testing: If changes are made, conduct testing in a development or quality assurance environment before applying changes to the production system.
  
  By addressing the root cause of the error and ensuring proper data entry practices, you can resolve the RA644 error and prevent it from occurring in the future.