memmalloc called for big allocation of 2181909 bytes - WSDL - problem with integration

Hello experts,
We have integration with another tool for Change Management process which when we try to call a function we get a payload which is too big for SM to accept.
We have increased shared memory,  and this parameter, did anyone had this problem?
https://docs.microfocus.com/SM/9.52/Hybrid/Content/parameters/reference/startup_parameter_maxhttpreqresponse.htm
https://docs.microfocus.com/SM/9.52/Hybrid/Content/parameters/reference/parameter_gcthreshold.htm
Best regards,
Dino