> ## Documentation Index > Fetch the complete documentation index at: https://docs.paxos.com/llms.txt > Use this file to discover all available pages before exploring further. # Execution Reports - Rejected and Expired > Order reject and expired execution report message formats, rejection reason codes, and detailed failure messages. ## Execution Report - Order Reject If an order is rejected, Paxos returns an Execution Report with **ExecType (`150`)** = `8` and **OrdRejReason (`103`)** populated with the rejection reason. ### Standard FIX Fields | Tag | Field | When Present | Notes | | ---- | ------------ | ------------ | ---------------------- | | `8` | BeginString | Always | Standard FIX header | | `9` | BodyLength | Always | Standard FIX header | | `35` | MsgType | Always | `8` (Execution Report) | | `49` | SenderCompID | Always | Standard FIX header | | `56` | TargetCompID | Always | Standard FIX header | | `34` | MsgSeqNum | Always | Standard FIX header | | `52` | SendingTime | Always | Standard FIX header | #### Standard FIX Trailer | Tag | Field | When Present | Notes | | ---- | -------- | ------------ | ----- | | `10` | CheckSum | Always | | ### Reject Response Fields **Always Present** | Tag | Field | When Present | Notes | | ----- | ------------- | ------------ | ------------------------------------------------------------------------ | | `54` | Side | Always | `1` = Buy, `2` = Sell | | `150` | ExecType | Always | `8` (Rejected) | | `32` | lastShares | Always | `0` | | `109` | ClientID | Always | | | `1` | Account | Always | | | `31` | LastPx | Always | `0` | | `103` | OrdRejReason | Always | See [Rejection Reason Codes](#rejection-reason-codes--ordrejreason-103) | | `151` | LeavesQty | Always | `0` | | `60` | TransactTime | Always | | | `58` | Text | Always | See [Detailed Rejection Messages](#detailed-rejection-messages--text-58) | | `20` | ExecTransType | Always | `0` (New) | | `55` | Symbol | Always | Currency pair | | `17` | ExecID | Always | | | `14` | CumQty | Always | `0` | | `11` | ClOrdID | Always | | | `44` | Price | Always | | | `6` | AvgPx | Always | `0` | | `41` | OrigClOrdID | Always | | | `40` | OrdType | Always | `1` = Market, `2` = Limit, `3` = Stop Market, `4` = Stop Limit | | `39` | OrdStatus | Always | `8` (Rejected) | | `37` | OrderID | Always | | | `381` | GrossTradeAmt | Always | `0` | | `59` | TimeInForce | Always | `1` = GTC, `3` = IOC, `4` = FOK, `6` = GTT | **Conditional** | Tag | Field | When Present | Notes | | ----- | ------------ | ---------------------------- | -------------------------- | | `38` | OrderQty | Limit and market sell orders | Base quantity | | `152` | CashOrderQty | Market buy orders | Fiat notional | | `18` | ExecInst | Post-only orders | `6` (Post-Only) | | `126` | ExpireTime | GTT orders | `YYYYMMDD-HH:MM:SS` format | **Brokerage Clients** | Tag | Field | When Present | Notes | | ------ | -------------------- | ----------------- | ---------------------------------------- | | `5047` | AllocBrokerAccountID | Brokerage clients | IdentityAccountId | | `50` | SenderSubID | Brokerage clients | IdentityId | | `5074` | FundCommissionOption | Brokerage clients | | | `5000` | RecipientProfileId | Brokerage clients | ProfileID that receives settled currency | **Optional** | Tag | Field | When Present | Notes | | ------ | --------------------- | ------------ | ----------------------------------------------------------------------------- | | `2362` | SelfMatchPreventionID | If enabled | Prevents self-matching. Up to 36 characters. Requires additional permissions. | ### Rejection Reason Codes – OrdRejReason (`103`) | Value | Meaning | | ----- | ------------------- | | `0` | Broker option | | `1` | Unknown symbol | | `2` | Exchange closed | | `3` | Order exceeds limit | | `5` | Unknown order | | `6` | Duplicate order | | `8` | Stale order | ### Detailed Rejection Messages – Text (`58`) **Validation Errors** | Text Value | Description | | ----------------------------------------------------------------------------- | ------------------------------------------- | | `ClientId Is required` | Missing ClientID field | | `ClientOrderId Is required` | Missing ClOrdID field | | `Account Is required` | Missing Account field | | `Symbol Is required` | Missing Symbol field | | `OriginalClientOrderId Is required` | Missing OrigClOrdID field | | `HandlingInstructions Expected Value for this field is 1` | HandlInst must be `1` | | `Side {value} is not an acceptable value for this field` | Invalid Side value | | `OrderType {value} is not an acceptable value for this field` | Invalid OrdType value | | `CashOrderQty Must be greater than zero` | CashOrderQty must be > 0 | | `OrderQuantity Must be greater than zero` | OrderQty must be > 0 | | `StopPrice Must be zero` | StopPx must be 0 for non-stop orders | | `ExpirationTime must be of format YYYYMMDD-HH:MM:SS or YYYYMMDD-HH:MM:SS.sss` | Invalid ExpireTime format | | `InvalidTimeInForce` | Invalid TimeInForce for this order type | | `MissingExpirationDate` | ExpireTime required for GTT orders | | `TimeInForce Not supported` | Unsupported TimeInForce for this order type | | `Account Is not a GUID` | Account must be a valid GUID | | `ClientId Is not a GUID` | ClientID must be a valid GUID | | `Invalid Message Type` | Unsupported MsgType | **Business Rule Violations** | Text Value | Description | | ----------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `InsufficientBalance` | Account lacks sufficient funds | | `NotionalValueTooLarge` | Exceeds [maximum notional order size](/guides/crypto-brokerage/fix/reference/new-order#maximum-notional-order-size-by-type) | | `InvalidPriceForTakerOrder` | Price deviates 15%+ from midpoint. See [Limit Order Taker Price Protection](/guides/crypto-brokerage/fix/reference/new-order#limit-order-taker-price-protection). | | `MinimumCommissionExceedsNotional` | Order notional value is too small; minimum commission would exceed it | | `InactiveInstrument` | Market is unavailable or in cancel-and-post-only mode | | `MarketHalted` | Market is halted | | `OrderIdentifierIsNotUniqueForUser` | Duplicate client order identifier for this user | | `TooManyOpenOrders` | User has exceeded the maximum of 25,000 open orders. Contact your Paxos representative to request a different limit. | | `UserNotAuthorizedForTrading` | User is not authorized to trade | | `BlacklistedCountryForTrading` | User's country is blocked from trading | | `UserNotExemptFromSelfMatchPrevention` | Self-match prevention triggered and user is not exempt | | `MarketDataUnavailable` | Market data is unavailable for validation | | `Market conditions have invalidated this order` | Market conditions prevent execution | | `PaxAccountingUnknownError` | Internal processing error | **Identity and Account Errors** | Text Value | Description | | ----------------------------- | ------------------------------------- | | `InvalidRecipientProfileId` | Invalid RecipientProfileId | | `InvalidIdentityId` | Invalid IdentityId | | `InvalidIdentityAccountId` | Invalid IdentityAccountId | | `InvalidFundCommissionOption` | Invalid FundCommissionOption value | | `DisabledIdentityId` | IdentityId is disabled | | `DisabledIdentityAccountId` | IdentityAccountId is disabled | | `PendingIdentityId` | IdentityId is pending approval | | `PendingIdentityAccountId` | IdentityAccountId is pending approval | **Matching Engine Rejections** These rejections occur after the order reaches the matching engine. Unlike the enum-style values above, these use human-readable text strings. | Text Value | Description | | ----------------------------------------- | --------------------------------------------------------- | | `no open limit order on other side` | Market order rejected — no liquidity on the opposite side | | `order marketable to existing quote/book` | Post-only order rejected — it would cross the book | | `Stale Order` | Order became stale before it could be matched | *** ## Execution Report - Expired Expired Execution Reports are returned for market buy orders that close with a small amount of unexecuted quote currency remaining. **ExecType (`150`)** = `C`, **OrdStatus (`39`)** = `C` (Expired). Market buy order executions are captured in [Partial Fill](/guides/crypto-brokerage/fix/reference/execution-report-fills) messages. The Expired message is a summary confirming the order is closed. ### Standard FIX Fields | Tag | Field | When Present | Notes | | ---- | ------------ | ------------ | ---------------------- | | `8` | BeginString | Always | Standard FIX header | | `9` | BodyLength | Always | Standard FIX header | | `35` | MsgType | Always | `8` (Execution Report) | | `49` | SenderCompID | Always | Standard FIX header | | `56` | TargetCompID | Always | Standard FIX header | | `34` | MsgSeqNum | Always | Standard FIX header | | `52` | SendingTime | Always | Standard FIX header | #### Standard FIX Trailer | Tag | Field | When Present | Notes | | ---- | -------- | ------------ | ----- | | `10` | CheckSum | Always | | ### Expired Response Fields **Always Present** | Tag | Field | When Present | Notes | | ----- | ------------- | ------------ | ------------------------------------------ | | `54` | Side | Always | `1` = Buy, `2` = Sell | | `150` | ExecType | Always | `C` (Expired) | | `32` | lastShares | Always | | | `109` | ClientID | Always | | | `1` | Account | Always | | | `31` | LastPx | Always | | | `151` | LeavesQty | Always | `0` | | `60` | TransactTime | Always | | | `58` | Text | Always | `Expired Order` | | `20` | ExecTransType | Always | `0` (New) | | `55` | Symbol | Always | Currency pair | | `17` | ExecID | Always | | | `14` | CumQty | Always | Total filled quantity | | `11` | ClOrdID | Always | | | `44` | Price | Always | | | `6` | AvgPx | Always | Average fill price | | `40` | OrdType | Always | | | `39` | OrdStatus | Always | `C` (Expired) | | `37` | OrderID | Always | | | `381` | GrossTradeAmt | Always | **lastShares (`32`)** \* **LastPx (`31`)** | | `59` | TimeInForce | Always | `1` = GTC, `3` = IOC, `4` = FOK, `6` = GTT | **Conditional** | Tag | Field | When Present | Notes | | ------ | ------------ | ---------------------------- | -------------------------- | | `12` | Commission | When charged | Commission paid | | `13` | CommType | When charged | `3` (Absolute Value) | | `38` | OrderQty | Limit and market sell orders | Base quantity | | `152` | CashOrderQty | Market buy orders | Fiat notional | | `18` | ExecInst | Post-only orders | `6` (Post-Only) | | `5851` | LiquidityInd | When available | `1` = Add, `2` = Remove | | `126` | ExpireTime | GTT orders | `YYYYMMDD-HH:MM:SS` format | **Brokerage Clients** | Tag | Field | When Present | Notes | | ------ | -------------------- | ----------------- | ---------------------------------------- | | `5047` | AllocBrokerAccountID | Brokerage clients | IdentityAccountId | | `50` | SenderSubID | Brokerage clients | IdentityId | | `5074` | FundCommissionOption | Brokerage clients | | | `5000` | RecipientProfileId | Brokerage clients | ProfileID that receives settled currency | **Optional** | Tag | Field | When Present | Notes | | ------ | --------------------- | ------------ | ----------------------------------------------------------------------------- | | `2362` | SelfMatchPreventionID | If enabled | Prevents self-matching. Up to 36 characters. Requires additional permissions. | > See also: [Execution Reports - Fills](/guides/crypto-brokerage/fix/reference/execution-report-fills) for fill details during the order lifecycle.