There's a lot to unpack here. First of all, I've edited the title because I realize while eventually my REST request will be implemented into PHP code, right now I've stripped this down to Postman to test JUST the REST, so I've stripped it as low and basic as possible. I can officially say the problem is with my request.

Basically, I'm making a POST request and also testing with a PUT request to Walmart's API using the "new" OAuth authentication. Sounds grand. GET works BEAUTIFULLY in Postman and in my actual PHP code. POST and PUT immediately return the exact same error, no matter what and how I do: 400 Bad Request, Invalid URL. In the case of my PUT test, which I was doing because it's a simpler and faster text with far less XML to try to comb through, here's the exact response in HTML headers:

<HTML>
    <HEAD>
        <TITLE>Invalid URL</TITLE>
    </HEAD>
    <BODY>
        <H1>Invalid URL</H1>
The requested URL "http&#58;&#47;&#47;&#37;5bNo&#37;20Host&#37;5d&#47;v3&#47;inventory&#63;", is invalid.
        <p>
Reference&#32;&#35;9&#46;c9384317&#46;1556319123&#46;8c89b8dc

        </BODY>
    </HTML>

I have left testing in PHP through my server and moved into Postman to try to locate the exact issue I'm having, and GET requests work beautifully. I am generating a new Token every 15 minutes or so. I have done... SO many minor changes, but the way the Feed examples and requests work, for all that I can tell I'm doing everything right. I honestly think I'm losing my marbles at this point.

What is most frustrating to me is that GET works. My TOKEN is working. My OAuth is working just fine. A lot of the headers that GET uses for the Walmart API are the exact same between PUT/POST/GET. The difference here is ONLY that the link has query parameters AND XML being shoved into the body. Edit: What I mean is that my headers do not change between the GET and the POST; the only thing that changes in what I am supplying is that XML is being sent in the body, and that query params are required. This is the only thing that changes between a successful GET and an unsuccessful 400 bad request PUT/POST. This leads me to believe something is wrong with how I'm processing the query params or my XML, but considering in the below example I've copy/pasted the XML... I'm not sure. It is an existing item in our catalog, I know for a fact.

Something I have noticed that I'm not quite knowledgeable enough to know if it's an issue or not with Postman is that Walmart's API requests that content-type be multipart/form-data. I've noticed it uses the term "example" when stating this, however, it usually says "this or this" if it'll accept something else. If I switch content-type in Postman to multipart/form-data, however, the Body automatically becomes raw: text instead of raw: XML(application/xml) or text/xml. If I try to swap the raw to those types, it flips my content-type automatically to application/xml, so that's a little... hinky.

I am not going through a Proxy. I've turned off Global Proxy Configuration and Use System Proxy. Request timeout is set to 0. There's nothing Client Certificates. I mean, GET works, and my Token is successfully generated via outside PHP code (not in Postman, couldn't get that to work, said heck it).

HEADERS

PUT URL: https://marketplace.walmartapis.com/v3/inventory?sku=0xyz0

AUTHORIZATION

Bearer Token: Bearer Basic --insert token here--

WM_SVC.NAME: Walmart Marketplace
WM_QOS.CORRELATION_ID: randomString123
WM_SEC.ACCESS_TOKEN: --insert token here--
Accept: application/xml
Host: https://marketplace.walmartapis.com
Content-type: multipart/form-data

BODY raw: XML(application/xml)

<?xml version="1.0" encoding="UTF-8"?>
<inventory xmlns="http://walmart.com/">
    <sku>0xyz0</sku>
    <quantity>
        <unit>EACH</unit>
        <amount>7</amount>
    </quantity>
    <fulfillmentLagTime>1</fulfillmentLagTime>
</inventory>

Exact response

400 Bad Request

<HTML>
    <HEAD>
        <TITLE>Invalid URL</TITLE>
    </HEAD>
    <BODY>
        <H1>Invalid URL</H1>
The requested URL "http&#58;&#47;&#47;&#37;5bNo&#37;20Host&#37;5d&#47;v3&#47;inventory&#63;", is invalid.
        <p>
Reference&#32;&#35;9&#46;c9384317&#46;1556320429&#46;8ca752c4

        </BODY>
    </HTML>

Please send help, I think I've been staring at this so long I'm going to leave this physical world behind. Walmart relatively recently updated their authentication to OAuth and they've made vague passes at saying their old authentication will be deprecated and phased out, so I obviously want to try to get this to work.I tried to copy paste everything as best as possible. That XML is copy-pasted almost letter for letter from their example, with my own product switched in.

Also, the reference number down there always changes every time I run this, so it's not something I can actually look up. I've only supplied the Postman side of things because frankly if I can get that to work, my PHP will be fine, I've already knocked out some minor issues with the successful GET request.

If it's a semi-colon issue, I'll scream.

API Documentation: https://developer.walmart.com/#/apicenter/marketPlace/latest#updateInventoryForAnItem

使用cURL返回API XML响应

douyu2817

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