Fix Copper CRM integration errors

Connect my tools1 min readUpdated 2026-03-14

If your Copper CRM integration with JustCall is not working, this guide covers the most common issue and how to fix it.

Available on: Team plan or higher


Error: "Developer API is not enabled for this account"

This error means API access is turned off in your Copper workspace.

{
  "success": false,
  "status": 403,
  "message": "Developer API is not enabled for this account"
}

How to fix it

  1. Log in to Copper CRM with an admin account.
  2. Click your Profile Icon in the top-right corner.
  3. Select Workspace Settings.
  4. Go to API Keys / Integrations in the left menu.
  5. Toggle on Developer API access.

Requirements

Developer API access is only available on Copper Professional and Business plans. If you are on the Basic or trial plan, you must upgrade before the integration will work.


Still not working?

Try these steps:

  • Confirm you are logged in with admin privileges in Copper.
  • Clear your browser cache or try an incognito window.
  • Contact Copper support to verify your plan includes API access.
  • Disconnect and reconnect the integration in JustCall under Integrations > My Active Integrations.
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