System error when obtaining orders

[alvrom_41]

Hi everyone, I'm new to working with the eBay API, and I hope my question isn't too obvious.

I'm working on a project where I retrieve transactions using the following endpoint:

https://api.sandbox.ebay.com/sell/fulfillment/v1/order

However, the answer I get is the following:

{
  "errors": [
    {
      "errorId": 30500,
      "domain": "API_FULFILLMENT",
      "category": "APPLICATION",
      "message": "System error."
    }
  ]
}

It's important to note that I have used other endpoints and the API has worked correctly in those cases.

Any ideas or suggestions you can share? Thank you!

[znts-wholesale-global]

Sandbox environment could be causing issue. I can execute https://api.ebay.com/sell/fulfillment/v1/order and get a list of order in production without any issue.