Codes in the 83xx range are specific to query operations.

Query Errors

Code	Message	When You See It
`1001`	`INVALID SUBTYPE`	`SUBTYPE` on a `TYPE=Q` request is not one of `T`, `DL`, or `DI`.
`8340`	`NO RECORDS`	Transaction Query returned no results matching your filters. Treat as an empty result, not an error.
`8341`	`INVALID LASTDEP`	The `LASTDEP` on a Deposit List request is malformed (non-numeric or wrong length).
`8342`	`INVALID DEPNUM`	The `DEPNUM` on a Deposit Info request is malformed.
`8343`	`INVALID BLOCK`	The `BLOCK` parameter is malformed or non-numeric.
`8344`	`INVALID GATEREF`	The `GATEREF` on a Deposit Info lookup is malformed.
`8345`	`INVALID REFNUM or AUTHNUM`	The `REFNUM` or `AUTHNUM` on a Deposit Info lookup is malformed.
`8346`	`TRAN NOT FUNDED`	A Deposit Info lookup matched a transaction that has not yet been funded. Wait until the funding cycle completes.
`8347`	`TRAN NOT DEPOSITED` / `BLOCK OUT OF RANGE` / `DEPNUM NOT FOUND`	Three distinct conditions share this code — check the `TEXT` field on the response: the transaction has not reached a deposit, the `BLOCK` number exceeds the deposit's block count, or the `DEPNUM` was not found.
`8348`	`INVALID DEPNUM`	The `DEPNUM` passed validation but does not exist for this terminal. (Different from `8342`, which indicates a formatting error.)
`8615`	`TRAN NOT FOUND`	The `GATEREF` or `REFNUM`/`AUTHNUM` lookup did not match any transaction.

How to Handle

8340 — expected result for queries that return no matches. Render empty state in your UI.
83xx validation errors (8341-8345) — your code is sending malformed parameters. Check the parameter name in the error message and fix the request format. See Deposit Query or Transaction Query for the valid shapes.
8346 and 8347 TRAN NOT DEPOSITED — the transaction exists but hasn't been deposited yet. These are expected for recent transactions; retry after the nightly funding cycle.
8347 BLOCK OUT OF RANGE — you've paged past the last block of transactions in this deposit. Stop paging.
8347 DEPNUM NOT FOUND and 8348 — the deposit number doesn't exist for this terminal. Check the DEPNUM was returned by a recent Deposit List call for this same terminal.
8615 — the transaction lookup reference doesn't match any record. Check your inputs and confirm the transaction was processed on this terminal.