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

SAP Error Message - Details

• 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.

Smart SAP Assistant

• What is the cause and solution for SAP error message C4012 - The month of & only has & days ?

  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. For example:
  
  February has 28 days (29 in a leap year).
  April, June, September, and November have 30 days.
  All other months have 31 days.
  
  
  
  Correct the Date: If you find that the date entered is incorrect, correct it to a valid date.
  
  
  Review Date Logic in Custom Programs: If this error occurs in a custom program or report, review the logic that handles date calculations. Ensure that it correctly accounts for the number of days in each month.
  
  
  Check User Input Validation: If the error arises during data entry, consider implementing input validation to prevent users from entering invalid dates.
  
  
  Consult Documentation: If you are unsure about the date formats or the specific requirements of the transaction you are working with, consult the relevant SAP documentation or help resources.
  
  
  Related Information:
  
  Leap Years: Remember that leap years occur every four years, except for years that are divisible by 100 but not by 400. This affects the number of days in February.
  SAP Notes: Check SAP Notes for any known issues or patches related to date handling in your specific version of SAP.
  User Training: Providing training to users on how to correctly enter dates can help reduce the occurrence of this error.
  
  By following these steps, you should be able to resolve the C4012 error and ensure that valid dates are entered into the system.