Getting dump after calling BAPI_ALM_ORDER_MAINTAIN

Hi Experts,

I am facing a problem after calling FM 'BAPI_ALM_ORDER_MAINTAIN'.

The functionality,i have to achieve is

1.Create service order  through user-ext and place the newly created service order number in a custom field in CJ20N

2.when user double clicks on the newly created service order number in step1,it should take him to IW32

3.He can modify values in IW32 and should return to CJ20N

I am successful ,till point2, however when user tries to comeback to CJ20N,by that time ,the memory is filled with  "service order" details

and SAP tries to get a Project associated with the "service order "number

which obviously it cannot find .So a  dump "ORDER_NOT_FOUND"

Is there a work around to see the SAP buffer is not filled with the service order details and it gets the "right" project number when  it is back to CJ20N?

Regards,

Lakshmi