Constraints Exceeded blocs calls until clear all sessions

Hello,

we ahave a big number of calls over an SA and when it reaches its constraint of maximum-sessions 520 it starts rejecting calls.

We can see that a number of calls is decreasing but our SA still has Constraints Excedded and rejecting calls.

Session Agent vcs-v7-sermas.cloud-cc.telefonica.es() [In Service]

-- Period -- -------- Lifetime --------

Active High Total Total PerMax High

Inbound Sessions 1 1 0 40 3 4

Rate Exceeded - - 0 0 0 -

Num Exceeded - - 0 0 0 -

Burst Rate 0 0 0 0 0 1

Reg Rate Exceeded - - 0 0 0 -

Reg Burst Rate 0 0 0 0 0 0

Outbound Sessions 288 294 60 579575 331 531

Rate Exceeded - - 0 0 0 -

Num Exceeded - - 0 114 39 -

Burst Rate 0 4 0 0 0 18

Reg Rate Exceeded - - 0 0 0 -