diff --git a/examples/interop/common/mainchain_registration.ts b/examples/interop/common/mainchain_registration.ts
index cdd2bb1ea2a..939757f5d1c 100644
--- a/examples/interop/common/mainchain_registration.ts
+++ b/examples/interop/common/mainchain_registration.ts
@@ -123,5 +123,14 @@ export const registerMainchain = async (
 	});
 
 	console.log('Sent mainchain registration transaction. Result from transaction pool is: ', result);
+
+	const authorizeMainchainResult = await mainchainClient.invoke<{
+		transactionId: string;
+	}>('chainConnector_authorize', {
+		enable: true,
+		password: 'lisk',
+	});
+	console.log('Authorize Mainchain completed, result:', authorizeMainchainResult);
+
 	process.exit(0);
 };
diff --git a/examples/interop/pos-mainchain-fast/config/scripts/sidechain_registration.ts b/examples/interop/pos-mainchain-fast/config/scripts/sidechain_registration.ts
index 082deab672f..7e0d09cdefa 100644
--- a/examples/interop/pos-mainchain-fast/config/scripts/sidechain_registration.ts
+++ b/examples/interop/pos-mainchain-fast/config/scripts/sidechain_registration.ts
@@ -71,6 +71,14 @@ import { sidechainRegParams } from 'lisk-framework';
 			// Wait for 2 seconds before next registration
 			await wait(WAIT_PERIOD);
 		}
+
+		const authorizeSideChainResult = await sidechainClient.invoke<{
+			transactionId: string;
+		}>('chainConnector_authorize', {
+			enable: true,
+			password: 'lisk',
+		});
+		console.log('Authorize Sidechain completed, result:', authorizeSideChainResult);
 	}
 
 	process.exit(0);