Define Search String for EBS in SAP 4.6c

Hi All,

I have some question for search string for EBS in SAP 4.6c. I have already done this thing in ECC 6 and work well with "target field" as account number. but in 4.6c target field account number doesn't exist. Please suggest me, if there is a same way like account number target field in 4.6c?

Thanks in advance

Glenn