Operation identifiers provide a unique way to identify each individual API, and requiring them to have consistent casing reduces friction when generating SDKs and automating around APIs
OpenAPI Operations Operation Ids Special Characters Error
Message: Operation Identifier MUST Not Have Special Characters
Policies
Operation ID Conventions
Operation IDs need consistent conventions because code generators, SDKs, and docs all use them. Inconsistent casing or characters here breaks downstream tooling in ways that are painful to debug.