ecs-field-mappings When to use Use this skill when tasks include: - adding or modifying files under - populating with ECS field references - selecting , , , and values - choosing field and mapping properties ( , , , and related options) - checking whether a field already exists in ECS before adding custom fields - troubleshooting mapping validation/build failures from , , or pipeline test schema checks ECS dependency configuration Every package needs at the package root. This file pins the ECS schema version used for field resolution. This file is required whenever the package has any field f…