How To Fix VO009 - Date & cannot be converted into weekday

SAP Error Message - Details

• Message type: E = Error

• Message class: VO - W&S: Rough workload forecast + picking wave

• Message number: 009

• Message text: Date & cannot be converted into weekday

What causes this issue?

There is a problem determining the fixed values for domains in the
Dictionary.

System Response

The system continues to work with an empty "weekday" field.

How to fix this error?

You can carry on with your current work, but please inform your system
administrator as soon as possible.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message VO009 - Date & cannot be converted into weekday ?

  SAP Error Message:
  
  VO009 - "Date & cannot be converted into weekday"
  
  Cause:
  This error occurs when SAP tries to convert a given date into a weekday but fails. The typical reasons include:
  
  The date value passed to the function or program is invalid, incorrectly formatted, or outside the acceptable range.
  The date field might be empty or contain non-date characters.
  The system's date conversion routines encounter unexpected input, such as a date that does not exist (e.g., 31st of February).
  Sometimes, this error can occur if the date is in a format not recognized by the system locale or if the date is not properly converted to internal SAP date format (YYYYMMDD).
  
  
  Solution:
  
  
  Check the Date Input:
  
  Verify that the date value being processed is valid and correctly formatted.
  Ensure the date is in the internal SAP format (YYYYMMDD) before conversion.
  Check for empty or null date fields and handle them appropriately.
  
  
  
  Debug the Program or Function Module:
  
  Identify where the date conversion is happening.
  Use debugging tools to inspect the date value at runtime.
  Confirm that the date passed to the weekday conversion function is valid.
  
  
  
  Correct Date Handling Logic:
  
  If the date is coming from user input or external sources, add validation checks before processing.
  Use SAP standard function modules like DATE_GET_WEEKDAY or CONVERT_DATE_TO_WEEKDAY which expect valid internal date formats.
  
  
  
  Check System Settings:
  
  Ensure that the system date format and user locale settings are consistent.
  Sometimes, inconsistencies in date format settings can cause conversion errors.
  
  
  
  Patch or Update:
  
  If this error occurs due to a known bug in a specific SAP version, check SAP Notes for patches or corrections.
  
  
  
  
  Related Information:
  
  
  Function Modules for Date to Weekday Conversion:
  
  DATE_GET_WEEKDAY – Returns the weekday number for a given date.
  CONVERT_DATE_TO_WEEKDAY – Converts a date to a weekday name or number.
  
  
  
  SAP Notes:
  
  Search SAP Support Portal for message number VO009 or related keywords.
  Check for any OSS notes related to date conversion issues.
  
  
  
  Common SAP Date Formats:
  
  Internal format: YYYYMMDD (e.g., 20240615)
  External format depends on user locale (e.g., DD.MM.YYYY or MM/DD/YYYY)
  
  
  
  Example of Correct Usage:
  DATA: lv_date TYPE sy-datum,
        lv_weekday TYPE i.
  
  lv_date = '20240615'. " YYYYMMDD format
  CALL FUNCTION 'DATE_GET_WEEKDAY'
    EXPORTING
      date = lv_date
    IMPORTING
      weekday = lv_weekday.
  
  
  
  Summary:
  The VO009 error is caused by invalid or improperly formatted date values that cannot be converted into a weekday. The solution involves validating and correcting the date input, ensuring proper format, and using standard SAP functions for conversion. Debugging and checking system settings can help resolve the issue.