APIM per API logging support lets you enable logging request details per API basis. This will significantly impact APIM performance when you need to collect logs that come in to and out of the APIM instance. Users are able to enable or disable logging for each API by using the APIM REST API. WSO2 APIM logging gives you multiple log levels that let you log information in different levels. It includes log levels (OFF, BASIC, STANDARD, FULL) which include more information from BASIC to FULL. OFF was used to disable logging. By default, API log level is OFF and you can use REST API to update the log level.