[UPD]Mail on contract creation sent to non pmo user

models/acc_contract.py

@@ -55,7 +55,7 @@ class AccContract(models.Model):
 
         for doc in docs:
             operation_id = doc.acc_operation_id
-            if doc.seller_id:
+            if doc.seller_id and not doc.seller_id.is_pmo:
                 user_seller = self.env["res.users"].search(
                     [("partner_id", "=", doc.seller_id.id)]
                 )
@@ -67,7 +67,7 @@ class AccContract(models.Model):
                     template.with_context(
                         operation_id=operation_id.description
                     ).send_mail(doc.seller_id.id, force_send=True)
-            if doc.buyer_id:
+            if doc.buyer_id and not doc.buyer_id.is_pmo:
                 user_buyer = self.env["res.users"].search(
                     [("partner_id", "=", doc.buyer_id.id)]
                 )