PO XML proxy is triggered twice from ECC to SUS

Dear Experts,

We are using Classical scenario. Once a shopping cart is created and approved a PO will be created in ECC through PI and corresponding SUS PO will be created in SUS system, It will be triggered from ECC. when we check in SXMB_MONI transaction. There are 2 proxy genetared to SUS. Actually only one should trigger.

Kindly guide how it can be checked.

Thanks & Regards

Arun.K.P