How To Fix C4012 - The month of & only has & days

C4012 - Overview

• Message type: E = Error

• Message class: C4 - CTMS_SYNTAX_CHECK

• Message number: 012

• Message text: The month of & only has & days

What causes this issue?

The entry for the number of days in the required month is incorrect.

System Response

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

How to fix this error?

Correct your entry. If you have entered the wrong month, correct the
month entry.

Error message extract from SAP system. Copyright SAP SE.

C4012 - Details

• The SAP error message C4012, which states "The month of & only has & days," typically occurs when there is an attempt to enter a date that is invalid due to the number of days in a particular month. This error is common in scenarios where date validation is performed, such as during data entry in transactions or when processing records that involve date fields.
  
  Cause:
  The error is triggered when:
  
  A user tries to enter a date that exceeds the number of days in the specified month. For example, entering February 30 or April 31 would cause this error.
  There may be a programmatic issue where the date is being calculated or manipulated incorrectly, leading to an invalid date being generated.
  
  
  Solution:
  To resolve the C4012 error, you can take the following steps:
  
  
  Check the Date Input: Verify the date you are trying to enter. Ensure that it is a valid date according to the calendar.