| Status Code | Description | Response Headers |
| 200 | PDF stream | - |
| 400 | Bad request (e.g., invalid id) | - |
| 401 | Authentication failed | - |
| 404 | W9/W4/W8 form not found | - |
| Status Code | Description | Response Headers |
| 200 | PDF stream | - |
| 400 | Bad request (e.g., invalid id) | - |
| 401 | Authentication failed | - |
| 404 | W9/W4/W8 form not found | - |
| Status Code | Description | Response Headers |
| 200 | PDF stream | - |
| 400 | Bad request (e.g., invalid id) | - |
| 401 | Authentication failed | - |
| 404 | W9/W4/W8 form not found | - |
| Status Code | Description | Response Headers |
| 200 | PDF stream | - |
| 400 | Bad request (e.g., invalid id) | - |
| 401 | Authentication failed | - |
| 404 | W9/W4/W8 form not found | - |