When configuring phase controls for maintenance orders, you need to perform the following steps:
Assign phase control codes to an order type. This allows you to define which phase control codes are valid for a specific order type and how they influence the phase progression.
Define phase controls using the SSCUI. This allows you to create and maintain the phase control codes and their attributes, such as description, icon, color, and blocking indicator.
Maintain phase control codes for order headers and operations. This allows you to set or change the phase control codes for individual order headers or operations using the Manage Maintenance Notifications and Orders app. Reference: SAP Help Portal - Phase Control for Maintenance Orders