eCatalog Services Company performed services in October for a specific customer, for a fee of $7,890. Payment was received the following November. (a) Was the revenue earned in October or November?...

eCatalog Services Company performed services in October for a specific customer, for a fee of $7,890. Payment was received the following November. (a) Was the revenue earned in October or November? (b) What accounts should be debited and credited in (1) October and (2) November?

If the two totals of a trial balance are equal, does it mean that there are no errors in the accounting records? Explain.