>Hi everybody,
>
>I have the following error message text:
>
>"Credit Limit must be a number greater or equal than 0" (this error message is shown in angularJs web form).
>
>I am a bit concerned about than 0 part. If there would not be 'equal' part, then 'than' sounds OK. But with added 'equal' I am not exactly sure about this error message.
>
>Can you please tell me if this is OK and if not, how it should be formulated?
>
>Thanks in advance.

You're communicating with humans, not programmers.
What you really want to say to a human is that the credit limit can't be negative.
So why not just say:

"The credit limit can't be negative"