Objectives and Requirements
The OV-6a and SV-10a viewpoints identify the business, operational and system rules that apply to meet the objectives of systems, system hardware/software items, and/or system functions, enterprises, missions, operations, businesses, and architectures. These rules can act as either constraints or requirements.
To ensure that objectives and requirements are displayed in the OV-6a and SV-10a viewpoints the Objectives and requirements modeling option must be activated in MEGA. By default, this option is activated.
If by chance, however, you are not able to view your objectives and requirements activate the Objectives and requirements modeling option:

Select
Options > Business Process and Architecture Modeling > Objectives and requirements modeling.