fix: verify credentials

crm/fcrm/doctype/crm_exotel_settings/crm_exotel_settings.py

@@ -1,9 +1,24 @@
 # Copyright (c) 2025, Frappe Technologies Pvt. Ltd. and contributors
 # For license information, please see license.txt
 
-# import frappe
+import frappe
+import requests
+from frappe import _
 from frappe.model.document import Document
 
 
 class CRMExotelSettings(Document):
-	pass
+	def validate(self):
+		self.verify_credentials()
+
+	def verify_credentials(self):
+		if self.enabled:
+			response = requests.get(
+				"https://api.exotel.com/v1/Accounts/{sid}".format(sid=self.account_sid),
+				auth=(self.api_key, self.get_password("api_token")),
+			)
+			if response.status_code != 200:
+				frappe.throw(
+					_(f"Please enter valid exotel Account SID, API key & API token: {response.reason}"),
+					title=_("Invalid credentials"),
+				)