Issue in Material and Chapter ID Combnation in J1ID

Dear All SAP Experts,

I have a doubt, please help me how to resolve this issue.

If we are purchasing some material and also sale that material, the material code is same and the plant is same, in that case can we maintain this material in “J1ID” twice for purchasing & for Selling or we need to maintain only one time.

Thanks & Regards,

Sandeep