The same process runs differently in different parts of the business
Every site, region, or team has its own version of how the work gets done, often inherited, sometimes never written down, occasionally documented in a system the central team can't see. The variation is rarely intentional, but it shows up in the numbers, in the audits, and in the customer experience.
One canonical workflow and SOP per process, owned by a named team, used wherever that process runs. Local context can be added without forking the core process, so the standard stays consistent across the organisation even when the operational reality varies.