diff --git a/apps/ops/src/api/sms.js b/apps/ops/src/api/sms.js
index 985507c..ea45eb9 100644
--- a/apps/ops/src/api/sms.js
+++ b/apps/ops/src/api/sms.js
@@ -4,7 +4,7 @@
  *
  * @param {string} phone - Phone number (e.g. +15145551234)
  * @param {string} message - SMS body
- * @param {string} customer - Customer ID (e.g. CUST-00001) — logged as Communication in ERPNext
+ * @param {string} customer - Customer ID (e.g. LPB4 or C10000000000001) — logged as Communication in ERPNext
  * @param {object} [opts] - Extra options
  * @param {string} [opts.reference_doctype] - Link to specific doctype (default: Customer)
  * @param {string} [opts.reference_name] - Link to specific record