Operation identifiers provide a unique way to identify each individual API, which then used for SDK generation and other automation
OpenAPI Operations Operation Ids Error
Message: Operation MUST Have Identifier
Policies
Unique Identrifiers for API Operations
Operation IDs give each endpoint a unique, machine-readable name. SDKs, code generators, and documentation tools all depend on these being consistent and meaningful.
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.