diff --git a/models/workflow_execution/workflow_execution.go b/models/workflow_execution/workflow_execution.go
index 391fa94..0b0e637 100755
--- a/models/workflow_execution/workflow_execution.go
+++ b/models/workflow_execution/workflow_execution.go
@@ -132,6 +132,7 @@ func (d *WorkflowExecution) Buy(bs pricing.BillingStrategy, executionsID string,
 	purchases = append(purchases, d.buyEach(bs, executionsID, wfID, tools.DATA_RESOURCE, priceds[tools.DATA_RESOURCE])...)
 	d.PurchasesState = map[string]bool{}
 	for _, p := range purchases {
+		p.SetID(uuid.NewString())
 		d.PurchasesState[p.GetID()] = false
 	}
 	return purchases
@@ -186,6 +187,7 @@ func (d *WorkflowExecution) Book(executionsID string, wfID string, priceds map[t
 	booking = append(booking, d.bookEach(executionsID, wfID, tools.COMPUTE_RESOURCE, priceds[tools.COMPUTE_RESOURCE])...)
 	booking = append(booking, d.bookEach(executionsID, wfID, tools.DATA_RESOURCE, priceds[tools.DATA_RESOURCE])...)
 	for _, p := range booking {
+		p.SetID(uuid.NewString())
 		d.BookingsState[p.GetID()] = false
 	}
 	return booking