ADM.13:4.2 - Retain the content and correspondence needed by those uses
Keep the relevant source, decision or event identity, meaning, effective time and recording time where those distinctions change the answer. Identify the material rule or instruction edition used in an earlier decision.
Separate what the source asserts, what the handler established and what action occurred. A provider instruction record does not establish its effect. A copied decision retains only the scope its actual authority and conditions support.
Use A.10 when the source-to-use account must remain recoverable and contestable. Use ADM.3–4 or SIE for a material temporal or cross-source correspondence question. An ordinary case reference and relevant source can suffice; a complete provenance graph is not a prerequisite for every record.