After adding sources to your AI agent’s Knowledge Base, check that the information it needs is available. A source’s status tells you whether the agent can use it, while warnings help you identify missing content or incomplete article generation.

For example, a PDF may be available to the agent even though some scanned pages could not be read. Reviewing the warning helps you decide whether to provide a clearer version.

Check a source’s status

Open your agent’s Knowledge Base page and review the sources under Assigned. If you are using the AgentFlow Configure step, click Manage knowledge.

Each source shows its status beside its name.  Here are the statuses you might see in your Knowledge base: 

A warning icon beside a status means the source stopped and needs a retry. It can appear beside “Adding”, “Ready” or “Removing”, and the status keeps its name. Click the icon to open the source.

A source showing “Adding” or “Removing” is marked as stopped only after it has made no progress for a few hours. If there is no warning icon, the source is still progressing, so wait.

In “Data and tools” > “All data sources”, the “Status” column shows “Adding”, “Ready”, or “Failed”. It does not show “Removing”, because removal applies to an individual agent.

A source assigned to several agents shows the least advanced status across those agents in “All data sources”. Check the individual agent’s Knowledge Base when reviewing availability for that agent.

Understand the update summary

When you add several sources, a line above the list shows how many sources are included in the update and how many are ready.

The ready count increases as sources become available. The total stays the same unless you add more sources while the summary is showing. Those sources join the total.

The summary:

• Notes that adding sources usually takes a few minutes.
• Disappears when no sources are being added.
• Does not include a progress bar or percentage.
• Does not count sources whose adding or removal has stopped. These appear in a warning below the summary instead.
   

You can see this summary on the agent’s Knowledge Base page, in Manage knowledge, and on the agent’s page in Data and tools.

While sources are being removed, a line above the list shows the removal count and explains that the agent may still use them until removal finishes.

Retry sources that stopped updating

Occasionally a source stops before it finishes updating. Waiting will not finish it, so you need to retry it.

A warning appears below the update summary while any assigned source is in one of these situations:

The warning disappears when no sources are left in these situations.

Sources that show “Failed” are not included. Retry those one at a time from the source. See Retry a source that could not be added.

Find the affected sources

Click a situation in the warning to show only those sources in the list. Click it again, or click “Show all sources”, to show everything. Search and the type filter still apply.

Retry every stopped source

Click “Retry” on the warning. This retries every source in the three situations, including sources hidden by the filter. Retrying usually takes up to 10 minutes.

Retry one source

Open the source and click “Retry” in the status at the top of the source details. This retries only that source.

After you retry

• Sources whose adding or removal stopped show “Adding” or “Removing” again and are counted in the update summary.
• Sources that didn’t finish improving answers stay “Ready”, and the update summary includes them until improvement finishes.
• The warning icon disappears straight away. This does not mean the work has finished.

If a source stops again, its warning comes back after a few hours. Contact support if the same source keeps stopping.

Where you can retry

• The agent’s “Knowledge Base” page, and “Manage knowledge” in the AgentFlow “Configure” step.
• “Data and tools”: select the agent under “Agents”, then open the “Assigned data sources” tab.
• The agent’s “Article wiki” tab in “Data and tools”. Retry here covers all affected sources at once.

Why is a source “Ready” while articles are still being generated?

Ready means the agent can use the source. It does not mean all background article generation has finished.

For files and indexed web pages, SleekFlow continues generating knowledge articles after the source becomes available. This can take longer than adding the source.

Until the articles are generated, the agent answers directly from the source content. Once they are generated, it uses the generated articles. The source stays Ready throughout, and opening it shows a note if answers are still being improved.

You do not need to wait for article generation to finish before testing questions using a Ready source.

Check whether PDF content was skipped

A Ready source may still have missing content. For example, a PDF can be imported while pages containing scanned images or only decorative content are skipped. The agent cannot use information from those skipped pages.

To check a PDF:

1. Find the source in the list. A small amber marker beside Ready indicates that some pages had no readable text.
2. Hover over the marker to check how many pages were affected.
3. Open the source.
4. Review Extraction quality to see how many pages were processed and why pages were skipped.

Skipped pages may show these reasons:

Long lists show a count of additional skipped pages. The page-by-page extraction summary is available for PDF documents only.

The source stays Ready and available to the agent despite extraction gaps.

What should you do about skipped pages?

Check whether the skipped pages contain information your agent needs.

For example, if a skipped page contains your return-policy exceptions, the agent will be missing important information even if the rest of the document was read successfully.

Prepare a version with readable text if important content was skipped. Files cannot be replaced in place; the existing source must be deleted and the revised file uploaded.

Note: Clicking Remove in an agent’s Knowledge Base only takes the source off that agent. It does not delete the source from your workspace Library.

Extraction quality appears only when there is an issue to report, such as skipped pages, a conversion failure, or incomplete article generation.

Retry a source that could not be added

If a source shows Couldn't add, open it to review the reason. You can then decide whether to retry or correct the original file.

A source that showed “Adding” or “Ready” earlier can later show “Failed” for this reason. The same steps apply.

SleekFlow cannot distinguish a password-protected file from a corrupted file, so the failure reason may not identify the exact file problem.

To retry:

1. Open the source that shows “Failed”
2. Click “Retry”.

Retrying restarts processing from the beginning. If the source fails again, prepare a revised file as described above rather than retrying again.

Retry on the warning above the source list does not include “Failed” sources. Retry each one from the source.

If you no longer want the source assigned to the agent, click “Remove” instead. The source stays in your workspace Library.

Retry article generation for a Ready source

A source can remain available even if SleekFlow could not finish generating articles from it. In this case, a warning icon appears beside Ready, but the status does not change.

Hover over the icon to read the explanation, or click it to open the source.

To retry article generation:

1. Open the source.
2. Click “Retry” in the status at the top of the source details.

The warning icon disappears after you click “Retry”. This does not mean article generation has already finished.

In “Data and tools”, you can also retry from either of these:

• On an agent’s “Assigned data sources” tab, open the source and click “Retry” in its status.
• In “All data sources”, open the source and click “Retry sync” under “Extraction quality”.

How is this different from a PDF extraction warning?

Both warnings can appear beside a Ready source, but they describe different issues:

• PDF extraction warning: Some pages could not be read. Check whether important information is missing.
• Article-generation warning: SleekFlow could not finish generating articles. The agent can still use the source content.

Review the explanation shown when you hover over the warning before choosing what to do.

Why does the agent still reference a source I removed?

Removing a source takes time. The agent may still use it while removal is in progress.

1. Open “Assigned” in the agent’s Knowledge Base.
2. Check whether the source is still listed as “Removing”.
3. If a warning icon appears beside “Removing”, removal didn’t finish and waiting will not finish it. Click “Retry” on the source or on the warning above the list.
4. Wait until the source leaves the list, then test again.

Removal usually takes up to 10 minutes. The source stays in your workspace Library and remains assigned to any other agents that use it.

Check the source before changing agent instructions

If the agent cannot answer a question, first check that:

• The relevant source is assigned to the agent.
• The source is available for the agent to use.
• The original source contains the answer.
• Important information was not skipped during extraction.
• The source is current and does not conflict with other assigned sources.

For example, changing the agent’s instructions will not supply a delivery restriction that is missing from its shipping policy.

After checking the information, review the agent’s instructions if its response still does not match your expectations.

Next steps

• Manage assigned sources if the agent needs different information.
• Review generated articles to check how information from your sources has been organized.
• Test your AI agent with questions related to the issue you resolved.