To post to a cost center, use the T-code FB50. It will take you to the following window.
In this window, you need to enter the following details :
- Document date
- Company code
- G/L Account for the Debit Entry which is to be posted to the Cost Center
- Debit Amount
- Cost Center in which the Amount is to be posted
- G/L Account for Credit Entry
- Credit Amount
Click the Save button at the top to post to this cost center.