SPIKE | Identify 686/674 APIs for REST migration

[steele-lm]

Issue Description

Determine what 686/674 endpoints can be migrated to the new REST API endpoints, so we can determine what endpoints we need to ask the implementation team to prioritize. Relates to the SOAP -> REST migration effort in #91282.

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Tasks

• Determine what 686/674 endpoints can be migrated to the new REST API endpoints
• Cross-reference this list with the list of endpoints scheduled for migration that was provided by the SOAP/REST team

Acceptance Criteria

• List of APIs that can be migrated to RESTful APIs. List should identify which VA.gov APIs are ready to migrate and which RESTful APIs still need to be developed

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