Installation and Upgrade > Windchill ESI > Installing and Configuring Windchill ESI in an SAP Environment > Using the Middleware Installation and Configuration Utility > Performing Post Installation Steps > Prerequisites for Publishing Operations
  
Prerequisites for Publishing Operations
In order to successfully publish operations the work centers that are associated with the operations in a process plan need to exist in the SAP system. Work centers need to be defined with the standard SAP2 key. Other standard keys are only supported if they have similar types of times (setup time, processing time, labor time, standard queue time, standard move time, max wait time) defined.