New tab in system configuration auto selected and 404 error

Question

I create a system tab but when I click Configuration then It selected my tab which order 200 (after catalog) and when i click My custom tab option it's give me a 404 page

My system.xml is

<config>
<tabs>
 <firstnewtab>
 <label>My custom tab</label>
 <sort_order>200</sort_order>
 </firstnewtab>
</tabs> 
<sections>
 <mytab_options>
 <label>My custom tab options</label>
 <tab>firstnewtab</tab>
 <show_in_default>1</show_in_default>
 <show_in_website>1</show_in_website>
 <show_in_store>1</show_in_store>
 <groups>
 <my_options1>
 <label>Options</label>
 <frontend_type>text</frontend_type>
 <show_in_default>1</show_in_default>
 <show_in_website>1</show_in_website>
 <show_in_store>1</show_in_store>
 <sort_order>30</sort_order> 
 <fields>
 <percent translate="label">
 <label>Label 1</label>
 <frontend_type>text</frontend_type>
 <sort_order>1</sort_order>
 <show_in_default>1</show_in_default>
 <show_in_website>1</show_in_website>
 <show_in_store>1</show_in_store>
 </percent>
 </fields>
 </my_options1>
 <my_options2>
 <label>Options2</label>
 <frontend_type>text</frontend_type>
 <show_in_default>1</show_in_default>
 <show_in_website>1</show_in_website>
 <show_in_store>1</show_in_store>
 <sort_order>40</sort_order> 
 <fields>
 <percent2 translate="label">
 <label>Label 2</label>
 <frontend_type>text</frontend_type>
 <sort_order>1</sort_order>
 <show_in_default>1</show_in_default>
 <show_in_website>1</show_in_website>
 <show_in_store>1</show_in_store>
 </percent2>
 </fields>
 </my_options2>
 </groups>
 </mytab_options>
</sections></config> 

UPDATE config.xml

<config>
<modules>
 <Alanstormdotcom_Helloworld>
 <version>1.0.0</version>
 </Alanstormdotcom_Helloworld>
</modules>
<global>
 <helpers>
 <helloworld>
 <class>Alanstormdotcom_Helloworld_Helper</class>
 </helloworld>
 </helpers>
</global></config>

Answer 1

ACL permission is missing in your module. so add that to your module. ACL permissions are used to give proper permission for your modules configuration section.

File : app\code\{codePool}\{Namespace}\{Module}\etc\adminhtml.xml

<config>
 <acl>
 <resources>
 <admin>
 <children>
 <system>
 <children>
 <config>
 <children>
 <mytab_options translate="title" module="cms">
 <title>Mytab Options</title>
 </mytab_options>
 </children>
 </config>
 </children>
 </system>
 </children>
 </admin>
 </resources>
 </acl>
</config>

After put this modifications, you need to clear the cache first. Then you need to sign out from backend and login again to see your system config section.

• Abdus Salam: Thanks Now 404 out. When I click that link that's work properly. But why it's selected first? I set <sort_order>200</sort_order> but It selected when I click configuration.
• Rajeev K Tomy: @AbdusSalam I didnt get your question. put some higher number there. may be 1000. I think the answer resolved your problem which you have described in the question. So feel free to accept the answer.
• Fabian Schmengler: About the preselection, please refer to magento.stackexchange.com/questions/73243/…