arrayformula with vlookup code example

Example: vlookup with arrayformula

={"Payment Type"; ARRAYFORMULA(IF(LEN(A2:A), VLOOKUP($A2:A&B2:B,{'S2'!$A$2:A7&'S2'!$B$2:B7, 'S2'!$C$2:C7},2,FALSE),))}