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Source changed 2026-10-14 19:58:00 UTC · snapshot created 2026-10-14 19:58:38 UTC · last check 2026-10-15 01:55:10 UTC

IS.5:4.4 - Qualify ordinary use and maintain the contributions that can change

Use existing evidence when it answers the continuation question under the intended conditions. Obtain another observation only when it can change a decision: for example, whether the recipient recognizes the escalation condition without prompting, or whether a service meets the actual demand when its introductory subsidy ends.

Observe the result and the support consumed. Repeated correct performance with constant expert repair supports the joint arrangement, not independent recipient capability. A single case under ordinary conditions may expose a missing input without estimating a failure rate. Keep the claim at the strength of the evidence.

Provide a correction route proportionate to the consequential change. The performer should know where to return a missing input, questionable answer or obsolete instruction; the responsible supplier must be able to receive that return. A low-risk personal practice may need only a maintained source and an available specialist. A service whose wrong result can harm others may require stronger monitoring, response and interruption arrangements from its governing professional practice.

Different contributions need different maintenance. A target-specific explanation can become obsolete when the target Method changes. A local access instruction can fail after a software change. A support strategy can become unsuitable when recipient preparation or workload changes. A source of research evidence can change the claim about why the practice works. Return each change to the owner of that contribution instead of treating every problem as a need for another learning event.

Where the organization needs a continuing capability to arrange such help, distinguish that capability from the supported subject capability. Its performers must be able to recognize implementation difficulties, obtain qualified contributions and arrange actual support in later cases. Use HCD when acquisition is wanted. Participation in the present introduction does not by itself establish that broader capability.