prevent dupes if

I have a form called f40projectMain(PK ProjectID) that has a CONTINUOUS
subform called f4ProjContacts. The form f4ProjContacts uses record source
that is the table t41ContactsProj(PK ProjectID and ContactSubID and
ContactID).

How can i check for dupes if ContactSubID= 48 or 49 and Current field =yes
per ProjectID?
There can be multiple ContactSubID= 48 or 49 if Current field =null or ""
or there can me multiple other ContactSubID's.
The Current field only pertains to ContactSubID 48 or 49 all other
ContactSubID's the Current field will be null or "".

ProjectID................ContactSubID.......Contac tID...Current
...1...............................48............. ...........3...............yes
...1...............................49............. ...........4...............yes
...1...............................49............. ...........6...............
...1...............................48............. ...........2...............yes this is a dupe (see below)
...2...............................48............. ...........4...............yes
...2...............................30............. ...........3...............
...2...............................30............. ...........6...............

this is a dupe since there is already a ContactSubID=48 that has Current
=yes for that particular project.
Translated...
ProjectID................ContactSubID.......Contac tID...Current
...abc123......................Manager............ ..Ann...............yes
...abc123......................ProjMgr............ ....Bob...............yes
...abc123......................ProjMgr............ ....Jim...............null
or ""
...abc123......................Manager............ ...Sue...............yes
this is a dupe
...def345.......................Manager........... ...Bob................yes
...def345.......................Intern............ ......Ann...............null or ""
...def345.......................Intern............ ......Jim...............null or ""

I really need your help!!

--
deb

Already responded to in one of your several other posts in another
newsgroup.

If you are really this desparate to get help, please consider locating a
paid help line...

Regards

Jeff Boyce
Microsoft Access MVP

--
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in this post. Mention and/or description of a product or service herein
does not constitute endorsement thereof.

Any code or pseudocode included in this post is offered "as is", with no
guarantee as to suitability.

You can thank the FTC of the USA for making this disclaimer
possible/necessary.

"deb" wrote in message
...
I have a form called f40projectMain(PK ProjectID) that has a CONTINUOUS
subform called f4ProjContacts. The form f4ProjContacts uses record source
that is the table t41ContactsProj(PK ProjectID and ContactSubID and
ContactID).

How can i check for dupes if ContactSubID= 48 or 49 and Current field
=yes
per ProjectID?
There can be multiple ContactSubID= 48 or 49 if Current field =null or ""
or there can me multiple other ContactSubID's.
The Current field only pertains to ContactSubID 48 or 49 all other
ContactSubID's the Current field will be null or "".

ProjectID................ContactSubID.......Contac tID...Current
..1...............................48.............. ..........3...............yes
..1...............................49.............. ..........4...............yes
..1...............................49.............. ..........6...............
..1...............................48.............. ..........2...............yes
this is a dupe (see below)
..2...............................48.............. ..........4...............yes
..2...............................30.............. ..........3...............
..2...............................30.............. ..........6...............

this is a dupe since there is already a ContactSubID=48 that has Current
=yes for that particular project.
Translated...
ProjectID................ContactSubID.......Contac tID...Current
..abc123......................Manager............. .Ann...............yes
..abc123......................ProjMgr............. ...Bob...............yes
..abc123......................ProjMgr............. ...Jim...............null
or ""
..abc123......................Manager............. ..Sue...............yes
this is a dupe
..def345.......................Manager............ ..Bob................yes
..def345.......................Intern............. .....Ann...............null
or ""
..def345.......................Intern............. .....Jim...............null
or ""

I really need your help!!

--
deb