How to read ducument flow (VBFA) using FM ?

Hi all,
I need to retrieve records from vbfa table by passing value only to VBELN field. Since VBELV is the first key field, Performance issue is there if we pass value only to VBELN field.
This is displayed as an error in SCI. Is there any Released FM that can be used instead of select statement.
Regards,
Shankar

Hi,
Which version are you in...I am able to use this function module..
Thanks,
Naren

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