Strange Exception when Consuming WebServices

Hello Friends,

I have made a CU with a single function to insert some data to a table and publish this CU. When I consume this Service It gives the 1st time exception - “Object of type Page with id 50087 could not be found.”. I don’t have this page. 2nd time Exception - Metadata for object of type Page with id 50087 is in a failed state. This is caused by a previous exception: Object of type Page with id 50087 could not be found… For this I follow steps provide in this link saurav-nav.blogspot.in/…/metadata-for-object-of-type-table-with.html . Multiple time Restarted Services of NAV and Sql but not done. Then I made a page of the same table after doing this a new Exception generate - "Client callback (such as showing Pages) is not supported when executing custom Web services."****.

I have a very simple CodeUnit as given Below

OnRun()

CreatePullOutReq(TransactionID : Text[200];RequestBy : Code[20];VehicleID : Code[20];RequestID : Code[20];Reason : Text[30])
IF GUIALLOWED THEN BEGIN
EntryNo:=0;
RecWebAppTransactions.RESET;
IF RecWebAppTransactions.FINDLAST THEN
EntryNo:= RecWebAppTransactions.“Entry No.”
ELSE
EntryNo:=0;
RecWebAppTransactions.INIT;
RecWebAppTransactions.“Entry No.” := EntryNo+1;
RecWebAppTransactions.Type := RecWebAppTransactions.Type::“4”;
RecWebAppTransactions.“Document No.” := RequestID;
RecWebAppTransactions.“Vehicle Id” :=VehicleID;
RecWebAppTransactions.“Document Date” := TODAY;
RecWebAppTransactions.“Confirmation Date” := TODAY;
RecWebAppTransactions.Remarks := Reason;
RecWebAppTransactions.INSERT;
END;

and Asp.Net Code

protected void Button1_Click(object sender, EventArgs e)
{

NetworkCredential nc1 = new NetworkCredential(“Administrator”, “abc”, “1.1.1.1”);
ws3.Credentials = nc1;
ws3.CreatePullOutReq(“CDEF7890-ABCD-0123-1234-567890BABDBF”, “Web”, “FA000001”, “REQ-00001”, “Break Fail”);

}
I waste much time on this but can’t understand why this exception occur.

Please Help me on this.

Thanks in Advance.