Does import page function really works

Question

I 'm trying to import a page from an application into another one. The two application are in the same wroksapce. Each time I try the import I get this error message
ORA-20001: GET_BLOCK Error. ORA-20001: Execution of the statement was unsuccessful. ORA-00001: unique constraint (FLOWS_020000.WWV_FLOW_PAGE_PLUGS_PK) violated <pre>declare s varchar2(32767) := null; l_clob clob; l_length number := 1; begin s := null; wwv_flow_api.create_page_plug ( p_id=&gt; 30908269848226167 + wwv_flow_api.g_id_offset, p_flow_id=&gt; wwv_flow.g_flow_id, p_page_id=&gt; 85, p_plug_name=&gt; 'Controle', p_plug_template=&gt; 30914950155248874
Error installing page.
Return to application.
Is this functionnality really work or is it just there for fun ??

Answer 1

It works, but only when you export from the same application. It may be useful if you only modify a single page in your development environment, and want to import that into production. That way you dont need to import your entire application.
Here is the message you get if you try to import from an application with a different ID or workspace:
This page was exported from a different application or from an application in different workspace. Page cannot be installed in this application.
So they must have the same application id to work