Transformation Manager directives allow you to control how jobs are queued and processed. TM directives can be provided through the API, as well as the web services and console, in which case they are prefixed with tm_.
tag
The job routing tag to distribute jobs between FME engines. Upon receipt of a new job on the FME Server, the Transformation Manager uses this tag, if specified, to redirect the request to an engine that has been configured to accept the given tag. For more information about job routing, see Configuring Job Routing in the FME Server Administrator's Guide.
ttl
The "time to live" in the job queue in seconds. This is used in cases where jobs are time-sensitive and can become invalid or stale while waiting in the job queue. If a job is queued longer than “time to live”, the Transformation Manager removes it from the queue instead of directing it to an engine.
priority
An integer representing the request’s priority level. Lower values mean a higher priority. Priority values must be greater than or equal to zero.
If priority is not set, the default is 100. The range is generally 1 to 100, but there is no restriction other than it being greater than zero. The highest priority is 1. A priority less than or equal to zero defaults to 100.