If you need to produce a sub-capacity report each month because you are using a sub-capacity pricing metric for z/OS®, you will use the Sub-Capacity Reporting Tool (SCRT). The SCRT has the requirement that each system identifier assigned to an operating system instance is unique for an LPAR on the processor during the entire reporting period, that is, each system identifier is associated with a single LPAR name. In order to comply, ensure that you review the SCRT requirements when deciding on z/OS system identifiers. For more information on the SCRT and its requirements, see http://www.ibm.com/systems/z/resources/swprice/subcap/scrt/ and z/OS Planning for Sub-Capacity Pricing.