Invoices-{Invoice ID}-Attachments-{File Name}

Number of APIs: 3

1. Allows you to retrieve Attachment on invoices or purchase bills by it's filename GET {{baseUrl}}/Invoices/:InvoiceID/Attachments/:FileName

2. Allows you to update Attachment on invoices or purchase bills by it's filename POST {{baseUrl}}/Invoices/:InvoiceID/Attachments/:FileName

3. Allows you to create an Attachment on invoices or purchase bills by it's filename PUT {{baseUrl}}/Invoices/:InvoiceID/Attachments/:FileName?IncludeOnline=false