How To Fix BC421 - Error in weekly rule: Invalid number of weeks

SAP Error Message - Details

• Message type: E = Error

• Message class: BC - Scheduler (calendar)

• Message number: 421

• Message text: Error in weekly rule: Invalid number of weeks

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message BC421 - Error in weekly rule: Invalid number of weeks ?

  The SAP error message BC421, which states "Error in weekly rule: Invalid number of weeks," typically occurs in the context of time management or scheduling within SAP systems, particularly when dealing with work schedules, time evaluation, or absence management.
  Cause:
  The error usually arises due to one of the following reasons:
  
  
  Incorrect Configuration: The weekly rule configuration in the system may have been set up incorrectly. This could involve specifying an invalid number of weeks for a particular rule.
  
  
  Data Entry Errors: There may be a mistake in the data entry for the weekly rule, such as entering a non-numeric value or a number that exceeds the allowed range.
  
  
  System Limitations: The system may have limitations on the number of weeks that can be defined in a rule, and the value entered exceeds this limit.
  
  
  Custom Modifications: If there are custom developments or modifications in the SAP system, they might not be handling the weekly rules correctly.
  
  
  Solution:
  To resolve the BC421 error, you can take the following steps:
  
  
  Check Configuration:
  
  Go to the configuration settings for the weekly rules in the SAP system (usually found in the IMG under Time Management).
  Verify that the number of weeks specified in the rule is valid and within the acceptable range.
  
  
  
  Review Data Entries:
  
  Check the entries made for the weekly rule to ensure that they are numeric and fall within the expected limits.
  Correct any discrepancies found in the data.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help files related to time management and weekly rules to understand the valid configurations and limits.
  
  
  
  Test Changes:
  
  After making any changes, test the configuration to ensure that the error no longer occurs.
  
  
  
  Seek Help from SAP Support:
  
  If the issue persists after checking the configuration and data entries, consider reaching out to SAP support for further assistance. They may provide insights specific to your system version or configuration.
  
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like PA30 (Maintain HR Master Data) or PT60 (Time Evaluation) to check employee records and time evaluation results.
  SAP Notes: Look for relevant SAP Notes that might address this specific error or provide patches or updates that could resolve the issue.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the cause of the BC421 error and implement a solution to resolve it.