ABAP program developed in one system will it run in another system.

Hi All,

I have a very important query.

I know that SAP 4.7, BW 3.1 and SAP CRM 4.0 have same kenel release SAP Basis 620.(please correct me if I am wrong)

If Kernel in these systems are same, will an ABAP program developed in one system (say SAP 4.7) also work in another system (say CRM 4) with same kernel.

This is very important me.

Please help.

With Regards

Amit