AJVOAF: Present record is getting is vanished when going for next record

Question

Dear Friends,
In a table region i have 3 LOVs -- Material ,Subinventory and Locator ( I have made Subinventory and Locator LOVs as read only....as per Requirement)
when material lov is clicked it displays material,subventory and locator. (After Material VO extension)
I have succeeded in bringing this subinventory to READ ONLY Subinventory field by default , when material lov is clicked (this is the requirement)
For first time when i click material lov ,iam getting subinventory name in " READ ONLY Subinventory field " by default. ok fine . But for the second time when iam doing the same (clicking Material lov), as usual,iam getting subinventory name in READ ONLY Subinventory field by default ....... BUT the above first record of subinventory is getting vanished .
For the third time when iam doing the same (clicking Material lov), the second record of subinventory is getting vanished. For the fourth time when iam doing the same (clicking Material lov),the third record of subinventory is getting vanished.So now iam able to see only the fourth record only no first,second,third they r getting vanished. How to resolve it.
And when clicking ADD ROWS button in table region it showing error like " ROW 1 MATERIAL - SELECT A VALID VALUE"
Please help. Please help.
let me know for any clarification
Thanks

Answer 1

Dear Saurabh
Thanks for quick response.
Let me give my REQ in detail.
Mine is a stadard page (maintainence user RESP -----stores----one step material issue PAGE) . have 3 LOVs .MATERIAL,SUBINVENTORY ,LOCATOR.
SUBINVENTORY ,LOCATOR. -----------these two i have made read only.
MATERIAL lov itself displays SUBINVENTORY ,LOCATOR also.
So which ever material (say M1) is user is selecting, the corrosponding SUBINVENTORY ( M1-Sub) ,LOCATOR (M1-Loc) should by default come in SUBINVENTORY ,LOCATOR fields which i have made read only.
Similarly when user is selecteing M2 then, corrosponding SUBINVENTORY ( M2-Sub) ,LOCATOR (M2-Loc) should by default come in SUBINVENTORY ,LOCATOR. which i have made read only.
Here iam getting M1 , M1-Sub , M1-Loc properly
But when iam clicking M2 , iam getting M2 , M2-Sub , M2-Loc .BUT at the same time iam loosing M1-Sub , M1-Loc (these 2 fileds are disappering)
for M3 iam loosing M2-Sub , M2-Loc.
for M4 iam loosing M3-Sub , M3-Loc.
this is the issue . plz help .
Thanks