Service unavailable vendor Receipts (503)

[tmeier]

I'm trying to create a vendor receipt via the published API endpoint

/api/v1.0/companies/{companyID}/vendorOrders/{vendorOrderID}/receipts/

but get this error

Service unavailable - try again later or consider setting this node to retry automatically (in the node settings)
503 - "{\"success\":false,\"errors\":[{\"message\":\"Service Unavailable\",\"code\":503}],\"messages\":[],\"result\":[],\"resultInfo\":[]}"

Full message

503 - "{\"success\":false,\"errors\":[{\"message\":\"Service Unavailable\",\"code\":503}],\"messages\":[],\"result\":[],\"resultInfo\":[]}"

{ "body": "{\"VendorInvoiceNo\":\"INV8611\",\"Notes\":\"Invoice processed automatically via n8n for SO100371.\",\"ExchangeRate\":1,\"DateIssued\":\"2025-08-06\",\"Category\":0,\"TaxAdjustment\":{\"ExTax\":0,\"IncTax\":0},\"FreightTaxCode\":0,\"Freight\":{\"ExTax\":0,\"IncTax\":0},\"Total\":{\"ExTax\":4.34,\"IncTax\":4.78},\"ItemsReceived\":true,\"Catalogs\":[{\"Catalog\":0,\"Qty\":1,\"ExpenseCostCenter\":0,\"UnitPrice\":{\"ExTax\":4.34,\"IncTax\":4.774},\"Total\":{\"ExTax\":4.34,\"IncTax\":4.774}}]}", "headers": { "content-type": "", "accept": "application/json,text/html,application/xhtml+xml,application/xml,text/*;q=0.9, image/*;q=0.8, */*;q=0.7", "Authorization": "**hidden**" }, "method": "POST", "uri": "https://xxxxxxxx.simprosuite.com/api/v1 ... /receipts/", "gzip": true, "rejectUnauthorized": true, "followRedirect": true, "resolveWithFullResponse": true, "followAllRedirects": true, "timeout": 300000, "encoding": null, "json": false, "useStream": true }

NOTE: I can successfully preform GET operations to other endpoints (e.g. https://xxxxxxxx.simpro.prosuite.com/ap ... ors/?Name={{ encodeURIComponent($json.output['Supplier Name']) }}

so my OAuth 2 credentials should be good

[SimproAPITeam]

Hi,

If your getting 503, it means you the request didnt complete,

Can you try again at another time ? Also, can you also confirm the response body is correct.

The taxAdjustment is expecting number not an array of ex and inc,

Also only pass inc or ex tax, you dont need to pass both on the single request.

Documentation on the endpoint: https://developer.simprogroup.com/apido ... 3510cb72d8

[tmeier]

Txs for getting back.

The issue was the catalog ID which was 0; found this via Postman to get more info. Once I added the catalog ID and cost centre the request was successful.

This raises a general question about the flow:

1 The user creates a PO and I get the vendorOrderID
2 Supplier invoice gets issued
3 The code processes the invoice, assembles the request bode and creates the receipt via the endpoint /api/v1.0/companies/{companyID}/vendorOrders/{vendorOrderID}/receipts/ and the corresponding Request Body. However this request needs the catalog ID. However the catalog ID is not available in /api/v1.0/companies/{companyID}/vendorOrders/{vendorOrderID}. So how do I find the catalog ID in order to complete the request body for the creation of the receipt?

Similarly the cost centre needs a lookup before it can be added to the request body. Are there some code samples available for this overall use case

[tmeier]

Any updates here? I don't know how to find the catalog ID and cost centre and need both to create a receipt via the API endpoint

[SimproAPITeam]

Hi tmeier,
The cost centre is available in the vendorOrder endpoint that you have as the assignedTo value.

To get the catalogs related to the vendor order you can use this endpoint to get the full list or detailed info of each item.

Code: Select all

/api/v1.0/companies/{companyID}/vendorOrders/{vendorOrderID}/catalogs/

https://developer.simprogroup.com/apido ... 0bc761a8a3

Regards