IF and an index match

I have two sheets in one work book and I'm trying to figure out the following:
An ID on the sheet has the same amounts in column C, E, and H

So column A, on both sheets, contains the ID.

Column B contains code AAA on both sheets
Column D contains TTTT or HAA on both sheets
Column G contains ZZZZ or BBB on both sheets

I need to figure out if all the amounts match the ID/codes in the columns and if the don't I need to know which amount column is different.

As an example,

I know that Sheet 1 and 2 do not match in C4. I need to know this amount doesn't match when A4 and B4 both match. I also need to know if D&E and G&H match for A4.

I hope that makes sense.

I was thinking of combining an if statement with an index match, but I'm having difficulty trying to figure out how.

assuming that each line is unique, one way of doing it is to concatenate a KEY in both sheets (I placed it in column J) and then compara the two.