diff --git a/docs/images/status.uml b/docs/images/status.uml
--- a/docs/images/status.uml
+++ b/docs/images/status.uml
@@ -1,15 +1,25 @@
 @startuml
-  [*] --> partial
-  partial --> deposited
+  hide empty description
+
+  state request <<choice>>
+
+  [*] --> request : POST Col-IRI
+
+  request --> deposited : [ without In-Progress: true ]
+  request --> partial : [ with In-Progress: true ]
+
+  partial --> request : PUT EM-IRI
+
+  partial --> expired : [ if no further requests are sent]
 
   state validation <<choice>>
 
-  deposited --> validation
+  deposited --> validation : checker runs
 
-  validation --> rejected
   validation --> verified
+  validation --> rejected : [ validation failed ]
 
-  verified --> loading
+  verified --> loading : loader starts
 
   loading --> done