A tier structure assigned to a program.
| Name | Type | Description |
|---|---|---|
| tierStructureId | String | Unique tier structure identifier. |
| createdAt | OffsetDateTime | Assignment creation timestamp (ISO 8601). |
| _object | ObjectEnum | Object type marker. |
| Name | Value |
|---|---|
| PROGRAM_TIER_STRUCTURE | "program_tier_structure" |