Error when opening an RFC connection (CPIC-CALL:ThSAPOCMINIT' : cmRc=20 thRc=236#SAP gateway conne

Dear Expert,

I configuration STMS with 3 system, Dev-Qas-Prd.

I configure Dev to Qas and I testing transport successfully.

and I trying configuration production. but error this:

pict :

please your advice sir..

regards,

Ruhul