How To Fix WD459 - Unit '&' is not a time unit

SAP Error Message - Details

• Message type: E = Error

• Message class: WD - Workflow definition

• Message number: 459

• Message text: Unit '&' is not a time unit

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WD459 - Unit '&' is not a time unit ?

  The SAP error message:
  WD459 Unit '&' is not a time unit
  Cause:
  This error occurs when a time unit symbol or abbreviation used in a time-related field or calculation is not recognized by the system as a valid time unit. The placeholder '&' in the message is replaced by the actual unit value that caused the error.
  Common causes include:
  
  An invalid or unsupported time unit is entered (e.g., a typo or a custom unit not defined in SAP).
  The time unit is missing or empty.
  The unit is passed incorrectly in a program or configuration (e.g., in Web Dynpro applications or time-related function modules).
  Custom code or user input is providing a unit that SAP does not recognize as a standard time unit.
  
  What are valid time units in SAP?
  SAP typically recognizes the following time units:
  
  D (Days)
  H (Hours)
  M (Minutes)
  S (Seconds)
  W (Weeks)
  Y (Years)
  
  If the unit is anything else, or if the unit is blank or malformed, the error will occur.
  Solution:
  
  
  Check the input value: Verify the time unit value being passed or entered. Make sure it is one of the valid SAP time units (D, H, M, S, W, Y).
  
  
  Correct the source of the unit:
  
  If the unit comes from user input, validate and restrict input to valid units.
  If the unit is set in configuration or custom code, correct the value to a valid time unit.
  In Web Dynpro or ABAP code, check the variable or parameter that holds the time unit and ensure it is assigned correctly.
  
  
  
  Debugging:
  
  Use debugging tools to trace where the invalid unit is coming from.
  Check the stack trace or call hierarchy to find the source of the invalid unit.
  
  
  
  Check SAP Notes and documentation:
  
  Sometimes, specific SAP components or versions may have known issues or additional valid units.
  Search SAP Support Portal for notes related to message WD459.
  
  
  
  Related Information:
  
  This error is common in time-related calculations, such as duration conversions, time interval processing, or scheduling.
  The message class is usually WD (Web Dynpro or time-related messages).
  If you are working with Web Dynpro ABAP, ensure that the context attributes or UI elements that hold time units are correctly bound and validated.
  In custom developments, always validate input data before processing.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Error
  WD459 Unit '&' is not a time unit
  
  
  Cause
  Invalid or unrecognized time unit symbol
  
  
  Valid units
  D, H, M, S, W, Y
  
  
  Solution
  Correct the time unit to a valid one; validate input; debug source of invalid unit
  
  
  Related
  Time calculations, Web Dynpro, ABAP code
  
  
  
  If you provide the exact unit value causing the error or the context (e.g., program, transaction, or scenario), I can help you more specifically.