What's the Bitbucket rate limit?

So we managed to connect the Bitbucket as @FernandoTorresinho recommended in a last topic, many thanks. But it seems that during some test synchronisations we receiving an error that API limits are done. What can this be related for?

Number of calls could be calculated in the following way: the number of files x the number of target languages.

I would really like to help you, but the limitations are set on the BitBucket side, and from our side, we cannot affect it. Our developers optimised everything (on our side) to the max, but the rest is on the other side I’m afraid.