diff --git a/packages/cli/src/constants.ts b/packages/cli/src/constants.ts
index 59062c4644..cae556dc96 100644
--- a/packages/cli/src/constants.ts
+++ b/packages/cli/src/constants.ts
@@ -7,6 +7,8 @@ import { RESPONSE_ERROR_MESSAGES as CORE_RESPONSE_ERROR_MESSAGES } from 'n8n-cor
 export const RESPONSE_ERROR_MESSAGES = {
 	NO_CREDENTIAL: 'Credential not found',
 	NO_ENCRYPTION_KEY: CORE_RESPONSE_ERROR_MESSAGES.NO_ENCRYPTION_KEY,
+	NO_CREDENTIAL_TYPE: 'Missing query string param: `credentialType`',
+	CREDENTIAL_TYPE_NOT_OAUTH2: 'Credential type is not OAuth2 - no scopes can be provided',
 };
 
 export const AUTH_COOKIE_NAME = 'n8n-auth';