Of course. Foreseeing probably violations and acceptable consequences is also a good way to make a treaty work.
For example, if the treaty demands a tribute by the first, what happens if on the third, you get a letter saying it will take a few more days still? If there's a no-travel zone, do you declare war just to kick the tresspasser out? If he is supposed to send you military support, and he failed to gather the required strength, what do you do? Etc, etc. By agreeing beforehand what the consequences of not respecting treaty clauses are, you give the treaty more flexibility and likelyhood to succeed. Otherwise, good luck agreeing on what is appropriate or not as a consequence after the fact.
