Question about TAETORD DataType

Which DataType of TAETORD is correct: integer or float? Using OCC 1.5, we should set All TAETORD DataTypes to integer(setting of OCC 2.0)? Reason for this question: TAETORD DataType has difference between Domains, SDTM version, or OCC version. ->difference between Domains: TA.TAETORD:float and FA.TAETORD:integer of SDTM 3.1.2 and OCC 1.5 ->difference between SDTM ver: TA.TAETORD:float(SDTM 3.1.2) and TA.TAETORD:integer(SDTM 3.1.3) of OCC 1.5 ->difference between OCC ver: TA.TAETORD:float(OCC 1.5) and all of TAETORD:integer(OCC 2.0) Best regards.