How To Fix BC420 - Error in daily rule: Invalid number of days

SAP Error Message - Details

• Message type: E = Error

• Message class: BC - Scheduler (calendar)

• Message number: 420

• Message text: Error in daily rule: Invalid number of days

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 BC420 - Error in daily rule: Invalid number of days ?

  The SAP error message BC420, which states "Error in daily rule: Invalid number of days," typically occurs in the context of scheduling or planning within SAP systems, particularly in modules related to production planning, project management, or time management.
  Cause:
  The error usually arises due to one of the following reasons:
  
  
  Invalid Input: The number of days specified in a daily rule or scheduling configuration is not valid. This could be due to:
  
  A negative number of days.
  A number that exceeds the maximum allowed limit.
  A non-integer value being entered where an integer is expected.
  
  
  
  Configuration Issues: There may be issues with the configuration of the daily rules in the system, such as incorrect settings in the planning parameters.
  
  
  Data Integrity Issues: There might be inconsistencies or errors in the master data or transactional data that are being referenced by the daily rule.
  
  
  Solution:
  To resolve the BC420 error, you can take the following steps:
  
  
  Check Input Values: Review the values entered for the number of days in the daily rule. Ensure that:
  
  The value is a positive integer.
  It falls within the acceptable range defined by your organization's policies or system configuration.
  
  
  
  Review Configuration: If you have access to the configuration settings:
  
  Navigate to the relevant configuration area (e.g., SPRO) and check the settings for daily rules.
  Ensure that all parameters are set correctly and that there are no discrepancies.
  
  
  
  Data Validation: Validate the master data and transactional data related to the daily rule. Look for any anomalies or inconsistencies that could be causing the error.
  
  
  Consult Documentation: Refer to SAP documentation or help files related to the specific module you are working with. This can provide insights into the expected values and configurations.
  
  
  Seek Help from SAP Support: If the issue persists after checking the above points, consider reaching out to SAP support or your internal SAP team for further assistance. They may have additional tools or insights to diagnose the problem.
  
  
  Related Information:
  
  Transaction Codes: Depending on the module, you may need to use specific transaction codes to access the configuration or data related to daily rules (e.g., OPPQ for planning parameters).
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide patches related to this error.
  User 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 and resolve the cause of the BC420 error in your SAP system.