Sandbox Finances API getTransactions consistently returns HTTP 500 / 135000
We are testing an eBay reseller analytics application in Sandbox. OAuth and user consent succeed, but every call to:
GET https://apiz.sandbox.ebay.com/sell/finances/v1/transaction
consistently returns HTTP 500, error code 135000: “There was a problem with an eBay internal system or process.”
This has reproduced on August 23 and 24, 2026.
We have verified the Sandbox Finances endpoint, sell.finances scope, valid user access token, EBAY_US marketplace header, transactionDate filter, limit and offset. The request construction matches eBay’s documented Finances API contract.
Sandbox App ID: OlaSkodv-ResellMa-SBX-2258a71ed-4ca28587
Has anyone else seen 135000 from getTransactions in Sandbox, or can eBay confirm whether the Sandbox Finances API is currently functioning correctly?
