Go to File > Interoperability > SAF > SAF Translators.
Use the Material Mapping - Import panel to map incoming materials (“SAF Material”) from the external software to their counterpart Archicad Building Materials.
For each SAF Material:
Click the pop-up to choose from the current Archicad project’s Building Materials.
To add more SAF materials to the mapping list, click Add.
See Add More SAF Materials (Material Mapping - Import SAF).
Note: If you map incoming SAF Cross Sections to Archicad Profiles by name (Profile Mapping - Import panel), then you do not need to map their materials, because Archicad Profiles include a Building Material.