TrustSet

[Source]

Create or modify a trust line linking two accounts.

Example TrustSet JSON

{
    "TransactionType": "TrustSet",
    "Account": "ra5nK24KXen9AHvsdFTKHSANinZseWnPcX",
    "Fee": "12",
    "Flags": 262144,
    "LastLedgerSequence": 8007750,
    "LimitAmount": {
      "currency": "USD",
      "issuer": "rsP3mgGb2tcYUrxiLFiHJiQXhsziegtwBc",
      "value": "100"
    },
    "Sequence": 12
}

TrustSet Fields

In addition to the common fields, a TrustSet transaction uses the following fields:

Field	JSON Type	Internal Type	Description
LimitAmount	Object	Amount	Object defining the trust line to create or modify, in the format of a Currency Amount.
LimitAmount.currency	String	(Amount.currency)	The currency to this trust line applies to, as a three-letter ISO 4217 Currency Code or a 160-bit hex value according to currency format. "XAG" is invalid.
LimitAmount.value	String	(Amount.value)	Quoted decimal representation of the limit to set on this trust line.
LimitAmount.issuer	String	(Amount.issuer)	The address of the account to extend trust to.
QualityIn	Number	UInt32	(Optional) Value incoming balances on this trust line at the ratio of this number per 1,000,000,000 units. A value of 0 is shorthand for treating balances at face value.
QualityOut	Number	UInt32	(Optional) Value outgoing balances on this trust line at the ratio of this number per 1,000,000,000 units. A value of 0 is shorthand for treating balances at face value.

TrustSet Flags

Transactions of the TrustSet type support additional values in the Flags field, as follows:

Flag Name	Hex Value	Decimal Value	Description
tfSetfAuth	0x00010000	65536	Authorize the other party to hold issuances from this account. (No effect unless using the asfRequireAuth AccountSet flag.) Cannot be unset.
tfSetNoRipple	0x00020000	131072	Blocks rippling between two trustlines of the same currency, if this flag is set on both. (See No Ripple for details.) If the fix1578 amendment is enabled, a transaction that uses this flag and cannot enable NoRipple fails with the result code tecNO_PERMISSION. If the amendment is not enabled, the transaction can result in tesSUCCESS (making any other changes it can) even if it cannot enable NoRipple on the trust line.
tfClearNoRipple	0x00040000	262144	Clears the No-Rippling flag. (See NoRipple for details.)
tfSetFreeze	0x00100000	1048576	Freeze the trustline.
tfClearFreeze	0x00200000	2097152	Unfreeze the trustline.

The Auth flag of a trust line does not determine whether the trust line counts towards its owner's XAG reserve requirement. However, an enabled Auth flag prevents the trust line from being in its default state. An authorized trust line can never be deleted. An issuer can pre-authorize a trust line with the tfSetfAuth flag only, even if the limit and balance of the trust line are 0.