diff --git a/aw-design-diagram/er-diagram.md b/aw-design-diagram/er-diagram.md
index 19f606213184948b22947440c1e6448b342f0efe..3e26330ec16b82dfb4c4adeb9157193a5a215b8d 100644
--- a/aw-design-diagram/er-diagram.md
+++ b/aw-design-diagram/er-diagram.md
@@ -109,12 +109,12 @@
 
         Credential {
             uuid id
-            string participant_did
+            uuid exchange_id
+            uuid cred_def_id
+            string participant_id
             string principal_did
             DateTime created_date
-            uuid created_by
             DateTime updated_date
-            uuid updated_by
         }
 
         CredentialDef {