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+---
+page: htroot/IndexFederated_p.html
+help: help/IndexFederated_p.md
+title: Index Sources & Targets
+package: import-export-federation
+access: admin
+kind: admin-page
+backend_java: source/net/yacy/htroot/IndexFederated_p.java
+---
+
+# Index Sources & Targets
+
+## Purpose
+
+Index Sources & Targets configures external index connections, especially Solr federation.
+
+Use it when YaCy should read from or write to another index service.
+
+## What You Can Do Here
+
+- Index Sources & Targets configures external index connections, especially Solr federation.
+- Define the source, target, format, collection, and expected size before starting.
+- Monitor progress because large transfers continue beyond the initial request.
+
+## Page Architecture
+
+Import and export pages translate external data formats into YaCy documents or move YaCy index data into another store. Most long-running actions create background work that should be monitored afterward.
+
+| Control | Meaning | Values or examples |
+| --- | --- | --- |
+| `federated.service.solr.indexing.authenticated.allowSelfSigned` | Enables the named feature. | Text value; use the page label and surrounding context to choose the exact content. |
+| `solr.indexing.solrremote.writeenabled` | Enables the named feature. | Text value; use the page label and surrounding context to choose the exact content. |
+
+## Correct Use
+
+Prepare source and target details before starting: file path or URL, format, collection, credentials if needed, and expected size. Imports and exports can continue in the background, so confirm progress on the related monitor or queue page.
+
+## Access And Safety
+
+Administrator access is required. YaCy protects `_p` pages as administration pages.
+
+Protected related endpoint(s): `/IndexFederated_p.html`.
+
+Backend checks: transaction token for protected POST, transaction token issued for forms.
+
+## Automation And API
+
+Page backend: `source/net/yacy/htroot/IndexFederated_p.java`.
+
+| Endpoint | Method | Access | Backend |
+| --- | --- | --- | --- |
+| `/IndexFederated_p.html` | `POST` | admin | `source/net/yacy/htroot/IndexFederated_p.java` |
+
+### Parameter Guide
+
+The table explains values that an agent or script must set deliberately. Parameters not relevant to a task should be omitted or left at the page default. Low-level generated parameters are omitted when they are only meaningful inside the rendered YaCy form.
+
+| Parameter | Meaning and valid values | Care |
+| --- | --- | --- |
+| `federated.service.solr.indexing.authenticated.allowSelfSigned` | Enables the named feature. | Set only when this option is part of the intended request; otherwise omit it and let YaCy use the page default. |
+| `solr.indexing.solrremote.writeenabled` | Enables the named feature. | Changes stored data, configuration, or a running job. Use the authenticated action flow where required and verify the result. |
+
+Example request shape:
+
+```http
+POST /IndexFederated_p.html
+Content-Type: application/x-www-form-urlencoded
+
+solr.indexing.lazy=...&core.service.fulltext=...&solr.indexing.solrremote=...&federated.service.solr.indexing.authenticated.allowSelfSigned=...&solr.indexing.url=...
+```
+
+## What To Expect
+
+Small operations may finish during the request; large imports, exports, harvests, and package operations usually need monitoring. Expect progress, logs, queue entries, or generated files rather than instant final search quality.
+
+## Related Pages
+
+- `IndexSchema_p.html`