What are the general rules of "processing units" and "requests"?

The processing units and requests included in your Sentinel Hub plan are reset on the first day in a month. The unused processing units and requests are not carried over to the next month. If you run out of processing units and/or requests before the end of the month, we recommend you to purchase the Top-up processing units package as described here.

More details about the processing units can be found in our documentation.