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application/src/main/java/org/thingsboard/server/controller/ControllerConstants.java

@@ -1636,7 +1636,7 @@ public class ControllerConstants {
 
     protected static final String TELEMETRY_KEYS_BASE_DESCRIPTION = "A string value representing the comma-separated list of telemetry keys.";
     protected static final String TELEMETRY_KEYS_DESCRIPTION = TELEMETRY_KEYS_BASE_DESCRIPTION + " If keys are not selected, the result will return all latest time series. For example, 'temperature,humidity'. " +
-            "If telemetry keys contain commas duplicate 'key' parameter for each key, for example '?key=my,key&key=my,second,key";
+            "If telemetry keys contain comma, duplicate 'key' parameter for each key, for example '?key=my,key&key=my,second,key";
     protected static final String TELEMETRY_SCOPE_DESCRIPTION = "Value is deprecated, reserved for backward compatibility and not used in the API call implementation. Specify any scope for compatibility";
     protected static final String TELEMETRY_JSON_REQUEST_DESCRIPTION = "A JSON with the telemetry values. See API call description for more details.";