html - Submitting data to existing form is being rejected -

i trying submit data form exists, different page. page submitting part of existing application cannot change. have created page send post, data being rejected server.

my code post data is:

<form action='http://www.website.net/admin/webporta/booking.aspx?code=fm13' method='post'> <input type='hidden' name='scriptmanager1' value='upd_coverage|link_dailyliab'> <input type='hidden' name='__eventtarget' value='link_dailyliab'> <input type='hidden' name='__eventargument' value=''> <input type='hidden' name='__lastfocus' value=''> <input type='hidden' name='__viewstate' value='%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%2frmbhpyyq3qp%2fx%2bcz'> <input type='hidden' name='inp_partnercode' value='fm13'> <input type='hidden' name='ddk_ins_sum' value='14999.0000'> <input type='hidden' name='ddl_vehanio' value='2015'> <input type='hidden' name='ddl_mc' value='auto/suv/pick up/cargo &amp; passengers van/light truck 2.5 ton of capacity'> <input type='hidden' name='rbl_term' value='daily'> <input type='hidden' name='ddl_days' value='4'> <input type='hidden' name='ddl_tpl' value='$150,000'> <input type="submit">test</input> </form> 

when use wireshark track request see following request existing app accepted:

post /admin/webportal/qq.aspx?code=fm13 http/1.1 host: www.thehost.net user-agent: mozilla/5.0 (windows nt 6.3; wow64; rv:39.0) gecko/20100101 firefox/39.0 accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 accept-language: en-us,en;q=0.5 accept-encoding: gzip, deflate x-microsoftajax: delta=true cache-control: no-cache content-type: application/x-www-form-urlencoded; charset=utf-8 referer: http://www.thehost.net/admin/webportal/qq.aspx?code=fm13 content-length: 3452 cookie: asp.net_sessionid=pocb0l45qrufu355rx1tmd55; acopendivids=info01,info02,info03,info04,info05; acgroupswithpersist=nada; submenuheader=0c,1c,2c connection: keep-alive pragma: no-cache  scriptmanager1=upd_coverage|link_dailyliab&__eventtarget=link_dailyliab&__eventargument=&__lastfocus=&__viewstate=%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%2frmbhpyyq3qp%2fx%2bcz&inp_partnercode=fm13&ddl_ins_sum=14999.0000&ddl_vehanio=2015&ddl_mc=auto%2fsuv%2fpick%20up%2fcargo%20%26%20passengers%20van%2flight%20truck%20up%20to%202.5%20ton%20of%20capacity&rbl_term=daily&ddl_days=4&ddl_tpl=%24150%2c000& 

however form creating following post:

post /admin/webportal/booking.aspx?code=fm13 http/1.1 host: www.thehost.net user-agent: mozilla/5.0 (windows nt 6.3; wow64; rv:39.0) gecko/20100101 firefox/39.0 accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 accept-language: en-us,en;q=0.5 accept-encoding: gzip, deflate referer: http://newwebapp.com/buy.php?type=fullfull cookie: asp.net_sessionid=pocb0l45qrufu355rx1tmd55; acopendivids=info01,info02,info03,info04,info05,info06,info07; acgroupswithpersist=nada; submenuheader=0c,1c,2c connection: keep-alive content-type: application/x-www-form-urlencoded content-length: 3431  scriptmanager1=upd_coverage%7clink_dailyliab&__eventtarget=link_dailyliab&__eventargument=&__lastfocus=&__viewstate=%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%2frmbhpyyq3qp%2fx%2bcz&inp_partnercode=fm13&ddk_ins_sum=14999.0000&ddl_vehanio=2015&ddl_mc=auto%2fsuv%2fpick+up%2fcargo+%26+passengers+van%2flight+truck+up+to+2.5+ton+of+capacity&rbl_term=daily&ddl_days=4&ddl_tpl=%24150%2c000 

any idea can post accepted server?

i'm guessing has fact you're posting parametrized url? believe can perform , post requests independently of 1 another, not in tandem. try submitting "fm13" hidden field named "code".

http://www.w3.org/tr/html4/interact/forms.html#submit-format