Q: In a transaction they only state BILL, where will you record such transaction? Is it in debtors control account or creditors control account?
A: Hi Sylvester, we don't have enough information from what you're saying to tell you definitely if it is debtors or creditors.
Per Merriam Webster dictionary a bill is: "an itemized account of the separate cost of goods sold, services performed, or work done." (http://www.merriam-webster.com/dictionary/bill)
Chances are if it doesn't say the bill was received or given to another company, then chances are that the bill was received by the business you are doing the accounting for. So your business owes money to creditors.