Microsoft Dynamics 2016 Web API | POST invoicedetail

Question

I am able to POST and invoice EntityType to the Web API.

After creating the invoice I get the guid and I want to create invoice line items, which I believe are of invoicedetail EntityType.

I cannot POST a new invoicedetail. Every attempt I make with a range of different properties I receive either an Error 500 - An unexpected error occurred. or Error 500 - The parent id is missing.

An example of a JSON string I'm trying to POST. (invoicedetailid is the GUID of the previous invoice I create)

{
    "productdescription": "Test Line Item", 
    "invoicedetailid": "00000000-0000-0000-0000-0000000000000",
    "priceperunit": 10,
    "tax": 0,
    "quantity": 1,
    "baseamount": 10  
}

The documentation is vague and I'm wanting to know, what are the minimum required fields for invoicedetail and how can I POST a new invoice EntityType?

Answer 1

The field storing to lookup from invoicedetail to invoice is called invoiceid (not invoicedetailid, which is the id of the invoicedetail itself). Additionally, you need to use the @odata.bind-annotation:

To associate new entities to existing entities when they are created you must set the value of single-valued navigation properties using the @odata.bind annotation.

The body of your POST request would thus look as follows:

{
    "productdescription": "Test Line Item", 
    "invoiceid@odata.bind": "/invoices(guid-of-invoice-here)",
    "priceperunit": 10,
    "tax": 0,
    "quantity": 1,
    "baseamount": 10  
}