400 Bad Request response when sending invoice

[JohnnyJayJay]

400 Bad Request response when sending invoice

[prakash-gangadharan]

Hi @JohnnyJayJay, through the PayPal-Debug-ID which you have given in the description, I can see that the total_amount and minimum_amount_due value is set as 0.0.
Can you check with your integration again ?

Thanks!

[JohnnyJayJay]

I can see that the total_amount and minimum_amount_due value is set as 0.0.

That is correct. This was the only amount that worked before, that's why I used it. For any other amount, I used to get the error "Minimum amount is bigger than total amount". After some debugging and having failed to find anything that could be causing this, I thought that had to do with me running in sandbox and didn't investigate any further.

Now, I get the same 400 Response for any amount.

[prakash-gangadharan]

Hi @JohnnyJayJay
When you take look into the below doc link for Create draft invoice,
https://developer.paypal.com/docs/api/invoicing/v1/#invoices_create

There is no direct request parameter like total_amount. total_amount field is a read only field on the invoice resource and it is not valid in the invoice creation request. Documentation lists out all valid fields accepted in create invoice request. If you wish to only provide total amount, you should include a single item with that amount in the request.
Below is the example request body which you are trying to use.

Sample erroneous request payload:

{
  "number": "ba1542a",
  "merchant_info": {
    "email": "*** MASKED ***",
    "first_name": "Dennis",
    "last_name": "Doctor",
    "business_name": "Medical Professionals, LLC"
  },
  "total_amount": {
    "currency": "USD",
    "value": "110.0"
  },
  "allow_partial_payment": true,
  "minimum_amount_due": {
    "currency": "USD",
    "value": "20.0"
  },
  "currencyCode": "USD"
}

Error response:

{
    "name": "BUSINESS_ERROR",
    "message": "Minimum Due Amount cannot be greater than Total Amount.",
    "information_link": "https://developer.paypal.com/docs/api/invoicing/#errors",
    "debug_id": "e713060cb1ff5"
}

[prakash-gangadharan]

@JohnnyJayJay, try adding the amount via items array.

items array (contains the invoice_item object)
An array of invoice line item information.
https://developer.paypal.com/docs/api/invoicing/v1/#definition-invoice_item

Sample Request payload:

{
  "number": "ba1542b",
  "merchant_info": {
    "email": "*** MASKED ***",
    "first_name": "Dennis",
    "last_name": "Doctor",
    "business_name": "Medical Professionals, LLC"
  },
  "items": [
    {
      "name": "Sutures",
      "quantity": 110,
      "unit_price": {
        "currency": "USD",
        "value": "5"
      }
    }
  ],
  "allow_partial_payment": true,
  "minimum_amount_due": {
    "currency": "USD",
    "value": "20.0"
  },
  "currencyCode": "USD"
}

Example code block where I can able to set minimum_amount_due value successfully.

try {			
	APIContext context = new APIContext(clientID, clientSecret, mode);
	
	MerchantInfo merchantInfo = new MerchantInfo();
	merchantInfo.setEmail("*** MASKED ***");
	merchantInfo.setFirstName("Dennis");
	merchantInfo.setLastName("Doctor");
	merchantInfo.setBusinessName("Medical Professionals, LLC");
	
	Currency unitPrice = new Currency().setCurrency("USD").setValue(Double.toString(110));
	Currency minimum_amount_due = new Currency().setCurrency("USD").setValue(Double.toString(20));
	// ### Items
	InvoiceItem item = new InvoiceItem();
	item.setName("Ground Coffee 40 oz").setQuantity(1).setUnitPrice(unitPrice);
	List<InvoiceItem> items = new ArrayList<InvoiceItem>();
	items.add(item);
	
	Invoice invoice = new Invoice();
	invoice.setAllowPartialPayment(true)
		.setItems(items)
		.setMinimumAmountDue(minimum_amount_due)
		.setNumber(invoice.generateNumber(context).getNumber())
		.setMerchantInfo(merchantInfo)
		.create(context)
		.setBillingInfo(Collections.singletonList(new BillingInfo().setEmail("[email protected]")))
		.send(context);
	
} catch (JsonSyntaxException e) {
	e.printStackTrace();
} catch (JsonIOException e) {
	e.printStackTrace();
} catch (PayPalRESTException e) {
	e.printStackTrace();
}