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I am trying to update an invoice from an update invoice action in zapier. Earlier in the automation, I used a Find Invoice action to search for the invoice by the invoice number. This was successful, and returned all the fields of that invoice.
However, when I go to update the invoice and enter the line item details I want to add, searching for invoice by the ID, i get this error. I tried to enter the invoice number instead, tried adding and removing the customer ID, and i can’t get it to work.