What are the prerequisites for applying a support pack? What is the Procedure for applying support packs?

Download the Support Patches from market place.

Login through 000 client with user DDIC.

Go to Transaction SAPM.

From the menu support packages - > load package -> from Front End..

Then Select display button in the screen and select the patch and gives import.

Import the Package queue.

Take care that no users are in online while u upload the support packages.