question

Hi @sirasystems12, Could you please provide us the RlogID to triage the issue? Best Regards, eBay Developer Support

The rlogid is: t6pitnmsgwj70%3D9iptpitnmsgwj70*agltn%28rbpv6762-174210b0278-0x2001

Hi @sirasystems12, Invalid error is caused because the Shipping Package Type is not valid for one or more eBay Shipping Service(s) selected. Please make sure you are using a valid Shipping Package Type for the marketplace. You can use the getEbayDetails API call to fetch the list of valid package types. REF: https://developer.ebay.com/devzone/xml/docs/reference/ebay/GeteBayDetails.html Regards, eBay Developers Support

The package type is correct. It is **MAILING_BOX** as listed PackageTypeEnum here:
[ https://developer.ebay.com/api-docs/sell/inventory/types/slr:PackageTypeEnum][1] Calling the createOrReplaceInventoryItem in the inventory REST API as outlined here:
[ lhttps://developer.ebay.com/api-docs/sell/inventory/resources/inventory_item/methods/createOrReplaceInventoryItem][2] We are using the REST API, not he legacy SOAP API. **The API is defective and does not work.** Here are the facts: 1. Have been using the same request for years with no changes, but it stopped working in last few weeks. 2. The same request works in Sandbox but not in production. 3. The provided sample request also fails in production. 4. Verified package type of MAILING_BOX is valid. [1]: https://developer.ebay.com/api-docs/sell/inventory/types/slr:PackageTypeEnum [2]: https://developer.ebay.com/api-docs/sell/inventory/resources/inventory_item/methods/createOrReplaceInventoryItem Whatever changes were made to this API with the last month or so broke it, and now all calls fail to it in production. Sandbox works fine.