RCM Reference The reference number assigned by APM to the function. Functions are numbered sequentially in the order in which they are created. When failure mode optimization requires Isograph Availability Workbench, this attribute is mapped to function ID, functional failure ID, and cause ID in AWB. See Also RCM Reference The reference letter that APM assigned to the functional failure. Functional failures are identified sequentially in the order in which they are created. When failure mode optimization requires Isograph Availability Workbench, this attribute is mapped to functional failure ID and cause ID in AWB. See Also Analysis Number assigned to the analysis by APM. See Also Asset Asset number assigned by APM to the asset. See Also Function A function is whatever the asset is required to do. For example, the function of a truck might be to transport up to one tonne of freight at a maximum highway speed not less than 90 km/h. Each asset can have several functions but just one primary function. See Also