Copying sales history into new info structure

Hi Gurus,

We are running SAP since last two years and company is running since last 30 year but we have never used SAP S&OP. Now we want to use one. So far we have created info structure with required characteristics and key figures.

Can you please suggest me the process of copying sales history into info structure?

I will be really grateful to you if suggest me ASAP.

Thank in advance.

Kind Regards

Raja Ram