What guidance does ITIL give on the frequency of production of service reporting?

ITIL's service reporting guidance explicitly states that reporting frequency and format must be agreed upon with the customer, because different services and customers have different informational needs and contractual obligations. Imposing a provider-defined or universal schedule would conflict with ITIL's principle that services are designed around customer requirements.

Unilaterally setting intervals contradicts ITIL's principle of customer agreement - the provider alone cannot determine what reporting frequency meets the customer's needs.

ITIL does not prescribe a fixed weekly schedule; a rigid universal frequency cannot accommodate the varying criticality and requirements of different services and customers.

ITIL explicitly allows different reporting intervals for different services based on individual customer agreements, making a uniform interval across all services non-compliant with ITIL guidance.