Duplicate rows in Detail Table - Master Detail Relationship

Hi,
I have developed the Page it has following components. (Jdeveloper 10g - R12)
1) Query RN
It has around 11 parameters, 5 parameters have LOV attached, 2 are mandatory parameters.
Auto Customization criteria. we don't criteria map defined , where clause is build based on parameters and vo.executeQuery gets called on Go button click.
2) Sales Order Table RN (Master)
3) Sales Order Line Table RN (Detail)
View link is created to maintain the master detail relationship and detail region is attached to AM using view link under master region.
Page flow works in this way, when user enter the parameters in search region and click on Go button, Sales Order table RN (master) gets populated.
It has radio button when user click it fires PPR event .
Process form request gets called and master row gets set (Same code as per developer guide) and Sales Order Line table RN (detail).
Problem is once detail region gets populate and when user change any parameter which has LOV attached somehow same rows gets added to detail region which is weird because we have not clicked on GO button and radio button on header region is also not touched but detail region is populated somehow.
Please help
Thanks.
Deepak

Provide the query used for populating the child records. Issue might be due to caching.
Thanks
Shree

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=======
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Hi,
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line NUMBER (3);
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Duplicate rows in Detail Table - Master Detail Relationship

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