Why Doesn't the Phone Number Swap With an Error About requiredParms and No PPCN? - Invoca

If “Parameters Required to Run” is enabled on your Tag, the number won’t swap — and this error appears — unless that parameter is present in the visited URL.

If you’ve enabled the “Parameters Required to Run” setting in your Invoca Tag, the specified parameter must be present in the URL you’re visiting for the number swap to occur. If that parameter is missing, an error appears when inspecting the webpage. Applies to: Invoca Tag, Number Swap

Where to go next

Last modified on September 21, 2026