These codes indicate that the transaction was malformed, and cannot succeed according to the Xahau protocol. They have numerical values in the range of -299 to -200. The exact code for any given error is subject to change, so don't rely on it.
Tip: Transactions with tem codes are not applied to ledgers, and cannot cause any changes to the Xahau state. A tem result is final unless the rules for a valid transaction change. (For example, using functionality from an Amendment before that amendment is enabled results in temDISABLED; such a transaction could succeed later if it becomes valid when the amendment is enabled.)
temBAD_AMOUNT
An amount specified by the transaction (for example the destination Amount or SendMax values of a [Payment][]) was invalid, possibly because it was a negative number.
temBAD_AUTH_MASTER
The key used to sign this transaction does not match the master key for the account sending it, and the account does not have a Regular Key set.
temBAD_CURRENCY
The transaction improperly specified a currency field. See [Specifying Currency Amounts][Currency Amount] for the correct format.
temBAD_EXPIRATION
The transaction improperly specified an expiration value, for example as part of an [OfferCreate transaction][]. Alternatively, the transaction did not specify a required expiration value, for example as part of an [EscrowCreate transaction][].
temBAD_FEE
The transaction improperly specified its Fee value, for example by listing a non-XAH currency or some negative amount of XAH.
temBAD_ISSUER
The transaction improperly specified the issuer field of some currency included in the request.
temBAD_LIMIT
The [TrustSet transaction][] improperly specified the LimitAmount value of a trust line.
temBAD_NFTOKEN_TRANSFER_FEE
The [NFTokenMint transaction][] improperly specified the TransferFee field of the transaction. (Added by the [NonFungibleTokensV1_1 amendment][].)
temBAD_OFFER
The [OfferCreate transaction][] specifies an invalid offer, such as offering to trade XAH for itself, or offering a negative amount.
temBAD_PATH
The [Payment transaction][] specifies one or more Paths improperly, for example including an issuer for XAH, or specifying an account differently.
temBAD_PATH_LOOP
One of the Paths in the [Payment transaction][] was flagged as a loop, so it cannot be processed in a bounded amount of time.
temBAD_SEND_NATIVE_LIMIT
The [Payment transaction][] used the tfLimitQuality flag in a direct XAH-to-XAH payment, even though XAH-to-XAH payments do not involve any conversions.
temBAD_SEND_NATIVE_MAX
The [Payment transaction][] included a SendMax field in a direct XAH-to-XAH payment, even though sending XAH should never require SendMax. (XAH is only valid in SendMax if the destination Amount is not XAH.)
temBAD_SEND_NATIVE_NO_DIRECT
The [Payment transaction][] used the tfNoDirectRipple flag for a direct XAH-to-XAH payment, even though XAH-to-XAH payments are always direct.
temBAD_SEND_NATIVE_PARTIAL
The [Payment transaction][] used the tfPartialPayment flag for a direct XAH-to-XAH payment, even though XAH-to-XAH payments should always deliver the full amount.
temBAD_SEND_NATIVE_PATHS
The [Payment transaction][] included Paths while sending XAH, even though XAH-to-XAH payments should always be direct.
temBAD_SEQUENCE
The transaction is references a sequence number that is higher than its own Sequence number, for example trying to cancel an offer that would have to be placed after the transaction that cancels it.
temBAD_SIGNATURE
The signature to authorize this transaction is either missing, or formed in a way that is not a properly-formed signature. (See tecNO_PERMISSION for the case where the signature is properly formed, but not authorized for this account.)
temBAD_SRC_ACCOUNT
The Account on whose behalf this transaction is being sent (the "source account") is not a properly-formed account address.
temBAD_TRANSFER_RATE
The TransferRate field of an AccountSet transaction is not properly formatted or out of the acceptable range.
temCANNOT_PREAUTH_SELF
The sender of the [DepositPreauth transaction][] was also specified as the account to preauthorize. You cannot preauthorize yourself.
temDST_IS_SRC
The transaction improperly specified a destination address as the Account sending the transaction. This includes trust lines (where the destination address is the issuer field of LimitAmount) and payment channels (where the destination address is the Destination field).
temDST_NEEDED
The transaction improperly omitted a destination. This could be the Destination field of a [Payment transaction][], or the issuer sub-field of the LimitAmount field fo a TrustSet transaction.
temINVALID
The transaction is otherwise invalid. For example, the transaction ID may not be the right format, the signature may not be formed properly, or something else went wrong in understanding the transaction.
temINVALID_COUNT
The transaction includes a TicketCount field, but the number of Tickets specified is invalid.
temINVALID_FLAG
The transaction includes a Flag that does not exist, or includes a contradictory combination of flags.
temMALFORMED
Unspecified problem with the format of the transaction.
temREDUNDANT
The transaction would do nothing; for example, it is sending a payment directly to the sending account, or creating an offer to buy and sell the same currency from the same issuer.
temREDUNDANT_SEND_MAX
[Removed in: rippled 0.28.0][]
temRIPPLE_EMPTY
The [Payment transaction][] includes an empty Paths field, but paths are necessary to complete this payment.
temBAD_WEIGHT
The [SignerListSet transaction][] includes a SignerWeight that is invalid, for example a zero or negative value.
temBAD_SIGNER
The [SignerListSet transaction][] includes a signer who is invalid. For example, there may be duplicate entries, or the owner of the SignerList may also be a member.
temBAD_QUORUM
The [SignerListSet transaction][] has an invalid SignerQuorum value. Either the value is not greater than zero, or it is more than the sum of all signers in the list.
temUNCERTAIN
Used internally only. This code should never be returned.
temUNKNOWN
Used internally only. This code should never be returned.
temDISABLED
The transaction requires logic that is disabled. Typically this means you are trying to use an amendment that is not enabled for the current ledger.
temHOOK_DATA_TOO_LARGE
The transaction CreateCode field contains more than 256 bytes.