SAP patch SAPK-XXXXX* kind

Question

I know that: SAP_ABA -> SAPKA????? SAP_APPL -> SAPKH????? SAP_BASIS-> SAPKB????? SAP_BW -> SAPKW????? SAP_HR -> SAPKE????? SAP_CRM -> SAPKU????? but i don't know what SAPK-XXXXX*. It is often applied to different components. Anybody can talk about this patch?

Answer 1

These package files are created using the so-called Add-On Assembly Kit (AAK). SAPK is something like the designation of the originating system (think of your normal transports, starting with K - btw, this is one of the reasons that a SID may never be "SAP", this would cause collisions here). The dash following the SAPK designates an AAK package. This is followed by a version indicator and/or a package type and/or the short package name.