JSON_LISTINGS_FEED Help with "Invalid empty value provided in patch at index of 0" Error

[cnr91]

Hello,

We are encountering a persistent issue while using Amazon SP-API with JSON_LISTINGS_FEED to add an existing ASIN to our inventory. We keep receiving the error "Invalid empty value provided in patch at index of 0". Below is the JSON we are sending:

{ "header": { "sellerId": "HIDDEN", "version": "2.0", "issueLocale": "en_US" }, "messages": [ { "messageId": 1, "sku": "ABC123", "operationType": "PARTIAL_UPDATE", "productType": "PRODUCT", "attributes": { "externalProductId": "B007KQBXN0", "externalProductIdType": "ASIN", "fulfillment_availability": [ { "fulfillment_channel_code": "DEFAULT", "quantity": 10 } ], "standard_price": { "currency": "USD", "amount": 99.99 } } } ] }

Error Detail:
{ "header": { "sellerId": "HIDDEN", "version": "2.0", "feedId": "103771019934" }, "issues": [ { "messageId": 1, "code": "BAD_REQUEST", "severity": "ERROR", "message": "Invalid empty value provided in patch at index of 0." } ], "summary": { "errors": 1, "warnings": 0, "messagesProcessed": 1, "messagesAccepted": 0, "messagesInvalid": 1 } }

[weilinggu]

@cnr91 What is the product type of the product? Have you validated your attributes against the product type JSON schema? Are you trying to create an offer for an existing product?
Just from a glance, it seems like perhaps you are not using the right attribute or providing the attribute data in correct format.

You can also try using the Listings sample application to get an example of JSON feed you can use. It has a feature to generate JSON feed based on the operation you are trying to do. There is also a series of walk through videos on how to use it.

[chapmanjw]

The attributes provided (externalProductId, standard_price, etc.) are all malformed. The Product Type Definitions API provides JSON Schemas describing the proper format for attributes used in the JSON_LISTINGS_FEED format: https://developer-docs.amazon.com/sp-api/docs/product-type-api-use-case-guide.

[cnr91]

First of all, thank you for your reply.
I didn't know there was a test software for SP-API, I was sending requests via Postman.
I can add and delete products with asin via POST_FLAT_FILE_INVLOADER_DATA, but as far as I understand, January 2025 will be completely closed on this side. So it made more sense to do these operations with JSON_LISTINGS_FEED.

Listings sample application
I made all the settings from the link you provided but it doesn't accept my information.

Settings:

Error:

At the moment, I have not yet finished all the suggestions you have given, but I will try all of them

[chapmanjw]

@cnr91 For the issues you're facing with the sample application, can you open a support ticket with developer support? https://developer.amazonservices.com/support. This is one of our newer offerings and we have a bug there to track down.

[cnr91]

@cnr91 For the issues you're facing with the sample application, can you open a support ticket with developer support? https://developer.amazonservices.com/support. This is one of our newer offerings and we have a bug there to track down.

I had 3 different profiles in the aws cli setting, so I got an error.
aws configure list-profiles

Thank you for your quick response.

[weilinggu]

@cnr91 Is your issue resolved? or Are you still having issues?