+% my $custnum = $param->{"custnum$row"};
+% my $cust_main;
+% if ( $custnum =~ /^(\d+)$/ and $1 <= 2147483647 ) {
+% $cust_main = qsearchs({
+% 'table' => 'cust_main',
+% 'hashref' => { 'custnum' => $1 },
+% 'extra_sql' => ' AND '. $FS::CurrentUser::CurrentUser->agentnums_sql,
+% });
+% }
+% if ( !$cust_main ) { # not found, try agent_custid
+% $cust_main = qsearchs({
+% 'table' => 'cust_main',
+% 'hashref' => { 'agent_custid' => $custnum },
+% 'extra_sql' => ' AND '. $FS::CurrentUser::CurrentUser->agentnums_sql,
+% });
+% }
+% $custnum = $cust_main->custnum if $cust_main;
+% # if !$cust_main, then this will throw an error on batch_insert
+%