diff --git a/pkg/adapters/adapterif/adapter_proxy_if.go b/pkg/adapters/adapterif/adapter_proxy_if.go
index 30fcead..c514d6d 100644
--- a/pkg/adapters/adapterif/adapter_proxy_if.go
+++ b/pkg/adapters/adapterif/adapter_proxy_if.go
@@ -33,4 +33,13 @@
 		toDeviceID string,
 		proxyDeviceID string,
 		messageID string) error
+	TechProfileInstanceRequest(ctx context.Context,
+		tpPath string,
+		ponIntfID uint32,
+		onuID uint32,
+		uniID uint32,
+		fromAdapter string,
+		toAdapter string,
+		toDeviceID string,
+		proxyDeviceID string) (*ic.InterAdapterTechProfileDownloadMessage, error)
 }