diff --git a/src/models/NSInstanceModel.ts b/src/models/NSInstanceModel.ts
index c10c5ce..66294cf 100644
--- a/src/models/NSInstanceModel.ts
+++ b/src/models/NSInstanceModel.ts
@@ -267,6 +267,7 @@
     nsd?: NSD;
     operationParams?: OPERATIONPARAMS;
     'nsd-id': string;
+    constituent: string[];
 }
 
 /** Interface for the operationparams */