AMOUNT_MISMATCH
Message. IOU delta (current - previous) does not match this request's advertised price
Hint. Re-fetch the 402 response for the current price and re-sign.
Wire shape
{
"error": {
"code": "AMOUNT_MISMATCH",
"message": "IOU delta (current - previous) does not match this request's advertised price",
"hint": "Re-fetch the 402 response for the current price and re-sign.",
"docsUrl": "https://docs.tollgatepay.com/errors/amount-mismatch"
}
}Canonical URL
https://docs.tollgatepay.com/errors/amount-mismatch — this URL is hard-coded into the 402/403/451 docsUrl field. It is stable; renaming the slug requires a migration plan.