Validation Error message appearing multiple times

Summary:

Content (required):

We have a requirement to display a custom error message when an employee tries to add an absence more than the maximum limit allowed. Hence I have used the fast formula as mentioned below. However, I'm getting the error message displayed thrice as shown in the image. How can I limit it so that the message is displayed only once?

Thanks in advance!

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):

EFAULT FOR IV_START_DATE IS '4712/12/31 00:00:00' (date)

DEFAULT FOR IV_END_DATE IS '4712/12/31 00:00:00' (date)