Dear Deepa,
please check the webdypro applicatin FPM_TEST_ATTACHMENT_OVP with the configuration ID FPM_TEST_ATTACHMENT_ECM_OVP where you can see the different possibilities to store the data.
You can store in KPRO or within ECM which are storage possibilities provided by SAP.
For more information about them please read the cookbook or check the documentation of the components.
Regards
Heike