diff --git a/payment/src/main/resources/org/killbill/billing/payment/PaymentStates.xml b/payment/src/main/resources/org/killbill/billing/payment/PaymentStates.xml
index f4aeef9..fa8ccf3 100644
--- a/payment/src/main/resources/org/killbill/billing/payment/PaymentStates.xml
+++ b/payment/src/main/resources/org/killbill/billing/payment/PaymentStates.xml
@@ -127,6 +127,7 @@
<stateMachine name="PURCHASE">
<states>
<state name="PURCHASE_INIT"/>
+ <state name="PURCHASE_PENDING"/>
<state name="PURCHASE_SUCCESS"/>
<state name="PURCHASE_FAILED"/>
<state name="PURCHASE_ERRORED"/>
@@ -147,6 +148,30 @@
<transition>
<initialState>PURCHASE_INIT</initialState>
<operation>OP_PURCHASE</operation>
+ <operationResult>PENDING</operationResult>
+ <finalState>PURCHASE_PENDING</finalState>
+ </transition>
+ <transition>
+ <initialState>PURCHASE_PENDING</initialState>
+ <operation>OP_PURCHASE</operation>
+ <operationResult>SUCCESS</operationResult>
+ <finalState>PURCHASE_SUCCESS</finalState>
+ </transition>
+ <transition>
+ <initialState>PURCHASE_PENDING</initialState>
+ <operation>OP_PURCHASE</operation>
+ <operationResult>FAILURE</operationResult>
+ <finalState>PURCHASE_FAILED</finalState>
+ </transition>
+ <transition>
+ <initialState>PURCHASE_PENDING</initialState>
+ <operation>OP_PURCHASE</operation>
+ <operationResult>EXCEPTION</operationResult>
+ <finalState>PURCHASE_ERRORED</finalState>
+ </transition>
+ <transition>
+ <initialState>PURCHASE_INIT</initialState>
+ <operation>OP_PURCHASE</operation>
<operationResult>EXCEPTION</operationResult>
<finalState>PURCHASE_ERRORED</finalState>
</transition>
