Dynamic requests doesn't works on sandbox

[Alex-mother-life]

amazon-sp-api version - 0.8.3

Trying connect to sandbox but can't resolve error - INVALID_SANDBOX_PARAMETERS
static & prod env. works fine

request:
let res1 = await sellingPartner.callAPI({ operation: "listAllFulfillmentOrders", endpoint: "fulfillmentOutbound", query: {}, }); console.log(res1);

respond:

[amz-tools]

@Alex-mother-life, when using the sandbox you have to make sure to use the correct request parameters for the operation you want to test. You can find these inside the api models definitions in the docs by searching the corresponding json file for x-amzn-api-sandbox.

[k9ert]

@Alex-mother-life, when using the sandbox you have to make sure to use the correct request parameters for the operation you want to test.

It's confusing as this doesn't make so much sense for the dynamic sandbox. Unfortunately the documentation does not distinguish at all between static and dynamic. The word dynamic is not present anywhere in the documentation.

I couldn't find that clear distinction anywhere in any issue or via the search functionality. Can you maybe elaborate on that a bit?

Update: I guess i missed a central point: Some endpoints are supporting the dynamic sandbox and if they don't, they are returning static answers and in those cases you have to use the static request params.