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Question

403 Error on Custom Actions with Xero

  • April 28, 2025
  • 1 reply
  • 18 views

I’m trying to have the copilot create a basic get requests that finds “Authorized” invoices from a specific Contact Name and output a list of the Invoice Numbers to be used in the next step, but I keep getting a 403 Error saying “AuthenticationUnsuccessful”. 

The connection to Xero works and I’m able to use the prebuilt commands like find invoice by Invoice Number. I’m just not able to use it with any custom actions. 

Any suggestions? 

 

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1 reply

Troy Tessalone
Zapier Orchestrator & Solution Partner
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  • Zapier Orchestrator & Solution Partner
  • April 28, 2025

Hi ​@ZestTeam 

A different approach is to use this Zap action: Xero - API Request

Xero API: https://developer.xero.com/documentation/api/accounting/invoices/#get-invoices

 

If you need help, there is a directory of Certified Zapier Experts: https://zapier.com/experts