Create RMA reason

Creates a new RMA reason. Permission: sales.rma.reasons.create.

Endpoint

POST /api/admin/rma/reasons

Request body

Field	Type	Required	Notes
title	string	Yes	Reason label.
resolution_type	array	Yes	Allowed return actions: return, cancel_items.
status	integer	No	1 active / 0 inactive (default 1).
position	integer	No	Sort order.

Returns 201 with the created RMA reason.