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How to disable job/check in Zapier

Zapier mandates that all actions have async enabled to ensure successful processing of requests.

If your source files are quick to process and you wish to disable the job check, you can achieve this using the Custom API Call action.

For instance, if you want to fill out a PDF form without the job check, follow the steps below:

  1. Set up your trigger app.
  2. Choose the Custom API Call action.
  3. Select v1/pdf/edit/add as your API Endpoint.
  4. Copy and paste the sample code into the Input JSON field:
    "async": false,
    "inline": true,
    "name": "f1040-filled",
    "url": "",
    "fields": [
            "fieldName": "topmostSubform[0].Page1[0].FilingStatus[0].c1_01[1]",
            "pages": "1", 
            "text": "True" 
  1. Observe that the async parameter is set to false, effectively disabling the job check.

To learn more about the parameters and sample input JSON for filling PDF forms, please refer to our API Docs at this link: