General types mapping unexpected number of bytes

[Chaest]

Hello,

In DataCause, I find this snippet of code:

		"General32"            : Bytes(4),
		"General40"            : Bytes(4),
		"General48"            : Bytes(4),

In Data, I find this snipprt of code:

		"General32"            : Bytes(4),
		"General40"            : Bytes(4),
		"General48"            : 
			Switch(FindAttributeID, {
				"FirmwareVersion" : Struct(
					"Major" / Int8ub,
			        "Minor" / Int8ub,
			        "Revision" / Int8ub,
			        "Build" / Int24ub,
			    )
			},	default =   "Bytes" / BytesTostrHex),

Both of which seem to indicate that both General40 and General48 are using 4 bytes whereas their names clearly stipulate they should span over respectively 40 (5bytes) and 48 (6bytes) bits. Is that an error? And if not, why is that?

Thanks