To get the material document without using VBFA.

I have the following query but this is creating some performance issue since VBFA table is very huge.

SELECT b~mblnr

b~mjahr

INTO TABLE t_vbfa_mkpf

FROM vbfa AS a

INNER JOIN mkpf AS b

ON a_{vbeln = b}mblnr

WHERE vbelv EQ '1234'

AND vbtyp_n EQ 'R'

AND vbtyp_v EQ 'T'.

Can somebody suggest an alternate way to get the Material Document Number & Material Document Year.