How To Fix WD321 - When ref. date/time not equal to expression, time interval must be stated

SAP Error Message - Details

• Message type: E = Error

• Message class: WD - Workflow definition

• Message number: 321

• Message text: When ref. date/time not equal to expression, time interval must be stated

What causes this issue?

The field &V1& in the referenced table structure &V2& has an invalid
data type.

How to fix this error?

Please choose a structure which only contains fields with valid data
types.
Valid data types are:
ACCP,,Posting period
CHAR,,Character string
CLNT,,Client
CUKY,,Valid currencies
DATS,,Date
LANG,,Language key
NUMC,,Number sequence
TIMS,,Time
UNIT,,Unit of measure
Further information can be found in the Data Dictionary.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WD321 - When ref. date/time not equal to expression, time interval must be stated ?

  SAP Error Message:
  
  WD321 – When ref. date/time not equal to expression, time interval must be stated
  
  Cause:
  This error occurs in SAP Web Dynpro applications when a reference date/time is used in an expression or condition, but the corresponding time interval is missing or not specified. Essentially, the system expects a time interval to be defined whenever the reference date/time does not exactly match the expression's date/time value.
  In other words, if you are comparing or working with date/time values and the reference date/time differs from the expression's date/time, SAP requires you to specify a time interval to clarify the range or duration for the comparison or calculation.
  
  When does it typically occur?
  
  When defining filters or conditions involving date/time fields in Web Dynpro components.
  When using expressions or conditions that compare date/time values but omit the time interval.
  In scenarios involving dynamic date/time calculations or validations where the system needs a time interval to process the logic correctly.
  
  
  Solution:
  
  
  Specify the Time Interval:
  
  Ensure that whenever you use a reference date/time that is not equal to the expression's date/time, you explicitly provide a time interval. This interval defines the range or duration for the comparison.
  
  
  Check the Expression or Condition:
  
  Review the Web Dynpro component's code or configuration where the date/time expression is used. Look for conditions or filters involving date/time and add the missing time interval.
  
  
  Use Correct Syntax:
  
  When defining the expression, use the correct syntax to include the time interval. For example, if you are using a function or method that requires a time interval parameter, make sure it is provided.
  
  
  Consult Documentation or Code:
  
  If the error arises from custom code, check the logic handling date/time values and ensure that all necessary parameters, including time intervals, are passed correctly.
  
  
  
  Related Information:
  
  
  Web Dynpro Date/Time Handling:
  
  SAP Web Dynpro requires explicit handling of date/time intervals in many scenarios to avoid ambiguity.
  
  
  Time Interval Format:
  
  Time intervals are often specified in formats like PT1H (period of 1 hour), P1D (period of 1 day), etc., following ISO 8601 duration format.
  
  
  SAP Notes and Documentation:
  
  Check SAP Notes or the SAP Help Portal for any updates or specific guidance related to WD321.
  
  
  Debugging Tips:  
  
  Trace the point where the error occurs to identify the missing time interval.  
  Use breakpoints or logging in the Web Dynpro component to inspect date/time values and parameters.
  
  
  
  
  Summary:
  
  Cause: Missing time interval when reference date/time differs from expression date/time.  
  Solution: Add the required time interval to the expression or condition involving date/time.  
  Additional: Follow correct syntax and ensure all date/time comparisons are unambiguous.
  
  
  If you provide the specific context or code snippet where this error occurs, I can help you craft the exact fix.