Source: https://guides.developer.iata.org/docs/download-the-latest-standards

BagMaterialCodeEnum enum

The codelist contents of IATA Resolution 743b Attachment a. material codesValid Values: D - Dual Combined hard and soft material.; L - Leather; M - Metal - e.g. aluminum or sheet steel; R - Rigid - Durable, plastic, molded or formed.; T - Tweed
D
L
M
R
T
["D","L","M","R","T"]