OAMP, traditionally OAM&P, stands for operations, administration, maintenance, and provisioning.
Basically, these are the procedures you use during normal network operations.
They are day to day organisational procedures: handover, escalation, major issue management, call out, support procedures, regular updates including emails and meetings. In this section group you will find things like: Daily Checklists, On-call and Shift rotas, Call response and ticket opening procedures, Manufacturer documentation like technical specifications and operator handbooks, OOB Procedures