Working area settings are mandatory for inspection planning within the engineering workbench.

The Engineering Workbench (EWB) in SAP S/4HANA is a powerful tool for managing task lists, including inspection plans, in a structured and efficient way. Working areas in the EWB define the focus or scope of what users can edit or view during inspection planning. These settings are mandatory to streamline workflows and ensure the correct level of detail is maintained:

Header (A): The header level refers to the overall inspection plan (e.g., plan group and group counter). A working area focused on the header allows users to manage high-level attributes like validity dates or usage. This is a standard focus in EWB (transaction CEWB).

Operation (B): Operations within an inspection plan define the steps or activities (e.g., "Measure dimension"). A working area focused on operations allows detailed planning at this level, including assigning control keys or work centers. This is another standard focus in EWB.

Inspection Characteristic (C): While inspection characteristics (e.g., specific measurements) are part of an operation, they are not a standalone focus for a working area inEWB. They are managed within the operation context, not as a separate working area.

Classification (D): Classification is used for categorizing objects (e.g., materials) but is not a focus for working areas in inspection planning within EWB. It’s unrelated to this context.

Thus, "Header" and "Operation" are the correct focuses, aligning with EWB’s structure for inspection planning.References: SAP Help Portal - "Engineering Workbench in QM"; SAP S/4HANA QM User Guide - "Inspection Planning with EWB".