How To Fix WL366 - Result of operation '& & &' is a time; type '&' not allowed

WL366 - Overview

• Message type: E = Error

• Message class: WL - Workflow: run-time messages

• Message number: 366

• Message text: Result of operation '& & &' is a time; type '&' not allowed

What causes this issue?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

How to fix this error?

Only the following operations are permitted with date/time:
'date - date' returns an integer
'date - number' returns a date
'time - number' returns a time
'time - time' returns an integer
The result of any calculation or assignment must be type-compatible
with the operand(s) and may not lead to an overflow, i.e. the result
element must be large enough when selected.
The following abbreviations are used in the message:
'I': integers (ABAP data type: Int1, Int2, Int4)
'P': packed numbers with decimal places and signs (Dec, Packed)
'N': character string with numerical values (Numc)
'C': character strings (Character)
'D': date
'T': time
'O' or 'o': objects from the Business Object Repository

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WL366 - Result of operation '& & &' is a time; type '&' not allowed ?

  The SAP error message WL366, which states "Result of operation '& & &' is a time; type '&' not allowed," typically occurs in the context of ABAP programming or when working with time-related data types in SAP. This error indicates that there is an issue with the data types being used in an operation, particularly when dealing with time values.
  
  Cause:
  The error is caused by attempting to perform an operation that involves incompatible data types. Specifically, it suggests that the operation is trying to use a time data type in a context where it is not allowed or expected. This can happen in various scenarios, such as:
  
  Arithmetic Operations: Trying to perform arithmetic operations (like addition or subtraction) on time data types directly.
  Type Mismatch: Using a time data type in a place where a different data type (like a numeric or character type) is expected.
  Function Module or Method Calls: Passing a time