---
title: "AddSolutionMembersBody"
description: "Request body for a SolutionMember operation."
section: "Reference"
group: "Types"
order: 203
---

## Definition

```ts
interface AddSolutionMembersBody {
  solutionId: string;
  entityIds: Array<string>;
}
```

## Fields

| Field        | Type            | Notes                                                                                                                                          |
| ------------ | --------------- | ---------------------------------------------------------------------------------------------------------------------------------------------- |
| `solutionId` | `string`        | `required` — Solution to add the entities to.                                                                                                  |
| `entityIds`  | `Array<string>` | `required` — Prefixed entity IDs to add. Duplicates already in the solution are ignored. All entities must belong to the solution's workspace. |