Leviticus 4:13-18 NASB
'Now if the whole congregation of Israel commits error and the matter escapes the notice of the assembly, and they commit any of the things which the Lord has commanded not to be done, and they become guilty; when the sin which they have committed becomes known, then the assembly shall offer a bull of the herd for a sin offering and bring it before the tent of meeting. Then the elders of the congregation shall lay their hands on the head of the bull before the Lord, and the bull shall be slain before the Lord. Then the anointed priest is to bring some of the blood of the bull to the tent of meeting; and the priest shall dip his finger in the blood and sprinkle it seven times before the Lord, in front of the veil. He shall put some of the blood on the horns of the altar which is before the Lord in the tent of meeting; and all the blood he shall pour out at the base of the altar of burnt offering which is at the doorway of the tent of meeting.
Leviticus 4:27-30 NASB
'Now if anyone of the common people sins unintentionally in doing any of the things which the Lord has commanded not to be done, and becomes guilty, if his sin which he has committed is made known to him, then he shall bring for his offering a goat, a female without defect, for his sin which he has committed. He shall lay his hand on the head of the sin offering and slay the sin offering at the place of the burnt offering. The priest shall take some of its blood with his finger and put it on the horns of the altar of burnt offering; and all the rest of its blood he shall pour out at the base of the altar.
What could have been the underlying differences in the SIN OFFERINGS in the above texts where in one instance in the case of whole congregation the blood is taken into the tent of the meeting & in the other instance in case of a common man the blood is poured at the base of the altar,yet both are for atonement of sin committed unintentional?