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# Finance ISO message functions

The messages that can be sent using Finance ISO scripts are instances of the ot.protocols.financeISO.LrISOMsg class. The LrISOMsg class extends the ISOMsg class defined by the jPOS library.

LrISOMsg also supports all the APIs that are available in jPOS library for ISOMsg instances. See the documentation on the jPOS website for more information.

The LrISOMsg class includes the following functions:

getBytes | Returns the byte value associated with the field number.
getComponent | Gets the component associated with the field number.
getIsoVersion | Returns the message's ISO version.
getString | Returns the value associated with the given field number.
getValue | Returns the object value associated with the given field number.
hasField | Checks if a given field is present.
isIsoVersion | Checks if the LrISOMsg corresponds to the specified ISO version.
LrISOMsg | Returns an LrISOMsg, according to the constructor used.
set | Creates an ISOField associated with the field number within the LrISOMsg.
setFieldNumber | Changes the field number for a component.
unset | Clears a given field.

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