ABAP to display RFQ information

Hi,

I am currently coding a program to display RFQ information but facing a problem when linking the EKKO & EKPO tables.

The RFQ# is maintained in field EKPO-ANFNR but when i link the EKPO table to EKKO table, this field is blank. I have specified the document type EKKO-BSART as "AN".

Does it mean that i have to extract from RM06E instead of EKKO/EKPO?

Appreciate if anyone can help to advise, thanks!

regards,

CL