diff --git a/models/peer/peer_cache.go b/models/peer/peer_cache.go
index eff1895..8509136 100644
--- a/models/peer/peer_cache.go
+++ b/models/peer/peer_cache.go
@@ -71,16 +71,13 @@ func (p *PeerCache) checkPeerStatus(peerID string, appName string, caller *tools
 // LaunchPeerExecution launches an execution on a peer
 func (p *PeerCache) LaunchPeerExecution(peerID string, dataID string,
 	dt tools.DataType, method tools.METHOD, body map[string]interface{}, caller *tools.HTTPCaller) (*PeerExecution, error) {
+	fmt.Println("Launching peer execution on", caller.URLS, dt, method)
 	methods := caller.URLS[dt] // Get the methods url of the data type
-	if _, ok := methods[method]; !ok {
+	if m, ok := methods[method]; !ok || m == "" {
 		return nil, errors.New("no path found")
 	}
-	meth := methods[method] // Get the method url to execute
-	if meth == "" {
-		return nil, errors.New("no path found")
-	} else {
-		meth = strings.ReplaceAll(meth, ":id", dataID) // Replace the id in the url in case of a DELETE / UPDATE method (it's a standard naming in OC)
-	}
+	meth := methods[method]                        // Get the method url to execute
+	meth = strings.ReplaceAll(meth, ":id", dataID) // Replace the id in the url in case of a DELETE / UPDATE method (it's a standard naming in OC)
 	url := ""
 	// Check the status of the peer
 	if mypeer, ok := p.checkPeerStatus(peerID, dt.API(), caller); !ok {
diff --git a/models/workflow/workflow_mongo_accessor.go b/models/workflow/workflow_mongo_accessor.go
index 82327e8..5f7ce51 100644
--- a/models/workflow/workflow_mongo_accessor.go
+++ b/models/workflow/workflow_mongo_accessor.go
@@ -192,6 +192,9 @@ func (wfa *workflowMongoAccessor) share(realData *Workflow, delete bool, caller
 * execution is a create or delete function for the workflow executions depending on the schedule of the workflow
  */
 func (wfa *workflowMongoAccessor) execution(id string, realData *Workflow, delete bool) (int, error) {
+	if ok, _ := realData.CheckBooking(wfa.Caller); !ok { // check the booking of the workflow
+		return 409, errors.New("could not book the workflow")
+	}
 	var err error
 	nats := tools.NewNATSCaller() // create a new nats caller because executions are sent to the nats for daemons
 	if !realData.ScheduleActive { // if the schedule is not active, delete the executions