Sandbox test user "User is not eligible for Business Policy" blocking createPaymentPolicy/createReturnPolicy
Hi, I'm testing the Sell Inventory API's createOffer flow against a freshly registered Sandbox test user (TESTUSER_ account, App ID ZACKTYLL-SAVEDSEA-SBX-e42e93bd1-a1c2213a) and hit a hard block:
getPaymentPolicies and createPaymentPolicy (and the same for return policy) both return:
errorId 20403 - "User is not eligible for Business Policy."
createFulfillmentPolicy works fine - a legacy Shipping Profile already existed on the account and was returned via the "policy already exists" duplicate error.
I also tried the Seller Hub Business Policies opt-in page (accountsettings.sandbox.ebay.com/uas -> Seller Account) to opt in manually, but that page 500s/errors out for this account as well.
Is there a way to get a Sandbox test user flagged as Business-Policy-eligible, or is this expected for freshly registered test users and there's a different opt-in step I'm missing? Trying to get past this to test a full createOffer flow (payment/return/fulfillment policies + merchant location all required). Any pointers appreciated - thanks!
