enque/delay_log_time is a SAP Parameter attribute which is used to control Log time for delays information. This is available within R/3 SAP systems depending on the version and release level.
Below is the standard documentation available and a few details of the attributes values .
Whenever the sleep times for enqueue/wait operations in the work process
exceed a whole number multiple of this period of time, the expired wait
time is logged. Parameter enqueue/delay_log_level defines the level of
detail of the logging.
See SAP Parameter Documentation for full SAP documentation for this profile parameter.