when we are using - link the main report to three Subreports you have created go to the Subreports individually then right Click Select Change Subreport Links

Select from Available Fields click > to move to Fields to Link select Subreport Parameter Field to use from left,
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It asks for the parameter for all reports while running the report.

I want to use the serialNo parameter only once while passing to main report only.It should take automatically to sub reports.

Please help

Hi Praveen,

Thanks for the reply.
I am able to link the report but when I am running the report it is asking me to enter serialno for all the sub reports as well.
But the requirement is when we pass parameter to main report only once and it should pass to sub reports as well.