Give a distinct sequence number for every data type in Col A and Col B

Still using Excel 2016?

This doesn't seem to have anything at all to do with FREQUENCY. Maybe:

=INDEX($C$2:$C$60,MATCH(1,($A$2:$A$60=G1)*($B$2:$B$60=G2)))

**Array formulas are not entered in the same way as 'standard' formulas. Instead of pressing just ENTER, you first hold down CTRL and SHIFT, and only then press ENTER. If you've done it correctly, you'll notice Excel puts curly brackets {} around the formula (though do not attempt to manually insert these yourself).

Explain how you get 5 as there are only 2 entries with the given date and type you specified

Formula:

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Update your profile NOW, please.

Try this using 2021 functions:

=LET(u,UNIQUE(A2:B60),s,SEQUENCE(ROWS(u)),XLOOKUP(G1&G2,INDEX(u,,1)&INDEX(u,,2),s))

That's what post #7 does - have you looked at it?

Provide a more realistic sample datset and I'll have a look.

However, this should be marked as SOLVED as the original question has been asnwered. You are shifting the goalposts, so this is a tweak.

Glad to have helped.

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Already rejected by the OP.

In H6

Formula:

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This will give you 5.

See post #3 - already suggested hours ago and rejected.

Oh, I did not realize that, I've just checked the thread and the OP profile that he was using in 2016.
To tell the truth, I used to feel that asking members for which version of Excel was being used was not important, but when I was in the exact situation I've realized how much important it is, you are right
Thanks, Ali