How To Fix IM426 - Error during date calculation: Time entered not numerical

IM426 - Overview

• Message type: E = Error

• Message class: IM - Maintenance notifications

• Message number: 426

• Message text: Error during date calculation: Time entered not numerical

What causes this issue?

An error occurred when calculating the ,internal date. The date format
for that point in time is not numerical and can therefore not be
represented.

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

Error message extract from SAP system. Copyright SAP SE.

IM426 - Details

• The SAP error message IM426 ("Error during date calculation: Time entered not numerical") typically occurs when there is an issue with the time format or the data being entered in a field that expects a numerical value. This error is often encountered in modules related to maintenance, inventory management, or production planning where time calculations are necessary.
  
  Cause:
  
  Non-Numerical Input: The most common cause is that the input for a time field is not in a numerical format. For example, entering a string or special characters instead of a number.
  Incorrect Field Format: The field may be expecting a specific format (e.g., hours and minutes) and the input does not conform to that format.
  Data Type Mismatch: The system may be expecting a numerical value but is receiving a different data type (e.g., text).
  
  Configuration Issues: There may be configuration settings in the SAP system that are not set up correctly, leading to this error.
  
  
  Solution:
  
  Check