How To Fix WS079 - Enter either value days or fixed value days (correct entry)

SAP Error Message - Details

• Message type: E = Error

• Message class: WS - Supplier Billing Document

• Message number: 079

• Message text: Enter either value days or fixed value days (correct entry)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WS079 - Enter either value days or fixed value days (correct entry) ?

  SAP Error Message:
  
  WS079 - Enter either value days or fixed value days (correct entry)
  
  Cause:
  This error occurs when you are maintaining or entering data related to time-dependent conditions, validity periods, or scheduling agreements in SAP, and the system expects you to enter either a "value days" or "fixed value days" but not both or none.
  
  Value days typically refers to a relative number of days (e.g., payment terms like "net 30 days").
  Fixed value days refers to a fixed calendar day of the month (e.g., payment due on the 15th of each month).
  
  The system requires exactly one of these fields to be filled to correctly calculate dates or deadlines. If both fields are empty or both are filled simultaneously, the system throws this error.
  
  Where it typically occurs:
  
  In payment terms configuration (transaction code: OBB8 or during invoice processing).
  In delivery scheduling or purchase order validity periods.
  In condition records maintenance where time-dependent validity is defined.
  In credit management or billing where due dates are calculated.
  
  
  Solution:
  
  
  Check the input fields where the error occurs:
  
  Enter a value in either the Value Days field OR the Fixed Value Days field.
  Do not enter values in both fields simultaneously.
  Do not leave both fields empty if one is required.
  
  
  
  Correct the data entry:
  
  If you want the due date to be calculated based on a number of days after a reference date, enter the number in Value Days.
  If you want the due date to be a fixed day of the month, enter the day in Fixed Value Days.
  
  
  
  Review configuration:
  
  If this error occurs during configuration, verify the payment terms or condition records setup.
  Ensure that the fields are correctly maintained according to business requirements.
  
  
  
  Check for user-exits or custom validations:
  
  Sometimes custom code or validations enforce this rule. Review any enhancements or user-exits that might be causing this error.
  
  
  
  
  Additional Information:
  
  This message is a warning or error message defined in the SAP message class WS (which relates to sales and distribution or scheduling).
  The message text is:
  
  "Enter either value days or fixed value days (correct entry)"
  
  indicating a mandatory choice between two mutually exclusive fields.
  Proper maintenance of these fields ensures correct calculation of due dates, delivery dates, or validity periods.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Both "value days" and "fixed value days" fields are either empty or both filled.
  
  
  Solution
  Enter a value in only one of the fields: either "value days" or "fixed value days".
  
  
  Where
  Payment terms, scheduling agreements, condition records, delivery scheduling, billing.
  
  
  Impact
  Prevents incorrect date calculations and enforces correct data entry.
  
  
  
  
  If you provide the exact transaction or process where this error occurs, I can help with more specific guidance.