> ## Documentation Index
> Fetch the complete documentation index at: https://docs.invoca.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Pre-Transfer Webhooks Auto-Paused by the Invoca System

> This usually happens when PreSense isn't enabled on the account — without it, only certain Invoca data fields are available as substitution parameters in Pre-Transfer webhooks.

## Symptoms

* The Invoca system automatically paused webhooks
* An "unknown replacement parameters" error appears

**Applies to:** Pre-transfer webhooks

## Cause

If PreSense isn't enabled, only certain Invoca data fields are available as substitution parameters in Pre-Transfer webhooks, which can trigger an "unknown replacement parameters" error.

## Resolution

Confirm PreSense is enabled on the account — check with your Invoca Customer Success Manager if you're not sure. Marketing Data fields are only available to add as substitution parameters once PreSense is enabled.

## Where to go next

* [Do Pre-Transfer Webhooks Fire on Every Call?](/s/article/pretransfer-webhooks-fire-every-call)
* [How to Create, Edit, or Clone an Invoca Webhook](/s/article/create-edit-clone-invoca-webhook)