How to create package?

Hi All,
I'm new to ABAP and want to create a package for BAPI.
While creating package in SE80, I't shows a message
"cannot select component".
The details i'm filling in the package window creation are as given below:
Package:                     <package name>
Short Description:         <Description>
Application Component: BC-DWB
S/W Component:            HOME
Transport Layer:              SAP
Package Type:                Main Package
Plz Help. Thanks in Advance.

Hi
FOr package creation:
Go to TC Code : SE21
Ex : for creating a package:
Package : ZBAPI
Choose Create option
Then its asking about following deatails
Package : ZBAPI
Description: Give some descrion
Application Component: SD
Software Component: HOME
Transport Layer: SAP
Package TYPE: Not a main package
then save .
then continue.
By this procedure successfully package will be created .
Then Go to TC Code SWO1( for BAPI creation)
Object Type : ZBAPI1
choose Create
Then give the following values
Object Type:ZBAPI1
Object Name : ZBAPI1
Name::ZBAPI1
Description: Give some descrion
Program :zbapi_prog
Application: * (Crossed Application)
Then contiue.
Its give a pop up asking for package name.
Package :ZBAP I ( In SE21,Previously created package name )
Then Save
A pop up comes
Press continue.
Then
Utilitties ->API methods ->Add method
Give ur function module name
Then continue.
Then a pop appears
press " >"
press ">"
then yes
A method will be created.
double click on that method
select ABAP tab
Choose API function.
then
EDit->Change in release status->Object type->modeled.
EDit->Change in release status->Object type->implemented.
EDit->Change in release status->Object type->released.
EDit->Change in release status->Object type componenet ->modeled.
EDit->Change in release status->Object type componenet ->implemented.
EDit->Change in release status->Object type componenet ->released.
Two pop ups comes press yes .
Click on Generate Button
Successfully BAPI will be created
for check this go for TC code BAPI
choose alphabetic order
check ur bapi name is there or not.
For testing ur bapi
Go to SE21
place ur bapi name and press execute
give ur fields content and press execute
you will find some entries there.

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