A deferred credit could mean money received in advance of it being earned, such as deferred revenue, unearned revenue, or customer advances. A deferred credit could also result from complicated transactions where a credit amount arises, but the amount is not revenue.
A deferred credit is reported as a liability on the balance sheet. Depending on the specifics, the deferred credit might be a current liability or a noncurrent liability. In the past, it was common to see a noncurrent liability section with the heading Deferred Credits.