How do I add an attachment to a Purchase Invoice Line via Power Automate / Flow?

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Posted on by GTW

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Hello -- hoping somebody can help with this flow.

I'm creating a Purchase Invoice with corresponding Purchase Invoice Lines, and I want to attach an image of a receipt to the Purchase Invoice Line.

I can get the content into flow and BC, but I'm missing a step when it comes to adding the attachment.

My flow uses this step:

I can find the path for PurchaseInvoiceLines/item/documentAttachments/attachmentContent, and I'm passing the ID of the purchaseInvoiceLine and the content, but I have no idea what to use for the documentAttachments ID.

I tried creating a documentAttachment record, but purchaseInvoiceLine isn't one of the valid Parent Types, so I can't create a documentAttachment to get the ID.

Any ideas how this is intended to work?

Any ideas / suggestions are appreciated.

Thanks!

Garrett

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Dynamics 365 Business Central

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YUN ZHU 89,830 Super User 2025 Season 2 on at

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How do I add an attachment to a Purchase Invoice Line via Power Automate / Flow?

Hi, unfortunately, as far as I know so far, the standard attachment API is Incoming Document (table 130), not Document Attachment (table 1173).

More details:

https://yzhums.com/39365/

If you need to add attachments, you need to customize a new API. Here is a simple example for web service.

Importing Attachments To Sales Orders In Business Central Using Web Services - Ivan Singleton

Hope this helps.

Thanks.

ZHU

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