How To Fix S1477 - Number of weeks must be > 0

SAP Error Message - Details

• Message type: E = Error

• Message class: S1 - Statistik / SAP-Monitor

• Message number: 477

• Message text: Number of weeks must be > 0

What causes this issue?

You cannot display 0 weeks - that makes no sense.

System Response

The display is not changed.

How to fix this error?

You have to enter a value > 1 for the number of displayed weeks.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message S1477 - Number of weeks must be > 0 ?

  The SAP error message S1477 ("Number of weeks must be > 0") typically occurs in the context of planning or scheduling functions within SAP, such as in the Production Planning (PP) or Project System (PS) modules. This error indicates that a user has attempted to enter a value for the number of weeks that is either zero or negative, which is not acceptable in the context of the operation being performed.
  Cause:
  
  Invalid Input: The most common cause is that the user has entered a value of zero or a negative number in a field that requires a positive integer representing the number of weeks.
  Default Values: Sometimes, default values set in the configuration or user settings may inadvertently be set to zero.
  Data Entry Error: A simple typographical error during data entry can lead to this issue.
  
  Solution:
  
  Check Input Values: Review the input fields where the number of weeks is specified. Ensure that the value entered is greater than zero.
  Correct Configuration: If the error arises from a default value, check the configuration settings in the relevant module to ensure that defaults are set correctly.
  Validation Rules: Implement validation rules in the input screens to prevent users from entering invalid values.
  User Training: Provide training to users on the correct data entry procedures to minimize errors.
  
  Related Information:
  
  Transaction Codes: The error may occur in various transaction codes depending on the context (e.g., MD61 for planning, CJ20N for project planning).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Documentation: Refer to SAP documentation for the specific module you are working with to understand the expected input values and constraints.
  Support: If the issue persists after checking the above points, consider reaching out to your SAP support team or consulting the SAP Community for further assistance.
  
  By ensuring that the number of weeks is always a positive integer, you can avoid encountering this error in the future.