external-asset
warning by default
An id of a texture, sound or structure in the project's namespace that no Texture, Sound or StructureFile call in the project provides. The pack still loads, but the file must come from another pack.
Changing it
Set the rule's severity in mms.json, to error, warning, info, hint or off:
{
"lint": { "external-asset": "off" }
} To silence it on one line, write // mms-ignore external-asset on the line or the line above. See Lint rules in the guides for more.