Why is Bill of exchange is said to be unconditional or conditional order in writing?

A bill of exchange is considered unconditional when it specifies a fixed amount to be paid at a determined time without any conditions attached. Conversely, it is deemed conditional if payment is contingent upon a specific event or condition being met, such as the delivery of goods or performance of services. The distinction is crucial because it affects the rights and obligations of the parties involved in the transaction. Unconditional bills are generally more straightforward and enforceable compared to conditional ones.