Service Level Agreement Validation

In Service Level Agreement, when we try to update a document and save it, it throw a error Start Time can’t be greater than or equal to End Time for Monday.

But the Start time is 09:00 and the End Time is 18:00

Reload the doc and repopulate the times , see if that helps.
You updating the support hours fields ?

I’m not updating the support hrs fields.

When I repopulate the times (sames values) it works.
But removing all the rows and adding the support hrs again is not OK, right?