enque/deque_wait_answer is a SAP Parameter attribute which is used to control Dequeue: wait for answer of the Enqueue Server? 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 .
Dequeuing (removal of locks) can be synchronous or asynchronous. This
parameter can have the following values.
TRUE
Waits for response from the enqueue server (synchronous)
FALSE
Does not wait for response (asynchronous)
See SAP Parameter Documentation for full SAP documentation for this profile parameter.