Returns the text of the associated reason (see FS::reason) for this credit / voided payment / voided invoice. This can no longer be used to set the (deprecated) free-text "reason" field; see "new_or_existing" in FS::reason.
Returns only the text of the associated reason, absent any addlinfo that is included by "reason". (Currently only affects credit and credit void reasons.)
Hey! The above document had some coding errors, which are explained below:
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