Control options in an SLA have limitations. For example, these agreements must not include excessive contractual penalties if this is contrary to legal requirements. In principle, legal consequences such as the right of withdrawal or termination, reductions, penalties and damages or the reimbursement of fines must be specified in detail in a service level agreement. This last point is critical; Service requirements and vendor functions are changing, so there needs to be a way to ensure that the SLA is updated. Information technology outsourcing agreements, in which the remuneration of service providers is linked to the results achieved, have gained popularity due to the development of pricing models based on time and equipment or full-time staff. The service elements include the particularities of the services provided (and what is excluded if there is reason to doubt), the conditions of availability of the service, standards such as the window of opportunity for each level of service (for example, prime time and non-prime time may have different levels of service), the responsibilities of each party, escalation procedures and cost/service trade-offs. Make sure the metrics reflect factors that are under the control of the service provider. To motivate good behavior, SLA metrics must reflect factors that lie in the control of the extern externator. A typical mistake is to sanction the service provider for delays caused by the customer`s lack of performance. Depending on the service, the types of metrics to be monitored may include: SLAs offer a clear definition of expectations. Both parties can agree on what an “acceptable level of service” is can be challenging, so accuracy with contractual SLAs helps avoid future misunderstandings. .