--- url: "https://questionstar.com/help/integrations/panel-services/" title: "Integration with panel services — connecting a panel provider" description: "Connect external panels to QUESTIONSTAR: quotas, callback URLs, identifier mapping. Universal integration with respondi, Bilendi, Cint and others." lastmod: "2026-07-14" type: "help" --- # Integration with panel services Connect external panel providers like respondi, Bilendi or Cint — with quotas, callback URLs and identifier mapping. ## About the integration with panel services Panel services are typically used when you need a specific target group — for example, people with certain demographic characteristics, professional background, interests or experiences. The panel provider takes care of selecting suitable respondents for you and supplies the number of qualified participants you need. So that the panel provider can steer the process correctly, it needs to know which participants: - took part in the survey successfully *(Success)*, - could no longer take part because quotas were already filled *(Quotafull)*, - or were disqualified *(Screenout)*. For this, the panel provider usually gives you three specific URLs to which you should redirect participants depending on the case, for example: `https://panelservice.com?code=success&respondentID=[ID]` `https://panelservice.com?code=quotafull&respondentID=[ID]` `https://panelservice.com?code=screenout&respondentID=[ID]` As you can see, these URLs contain: - a **static part** that indicates the status (success, quotafull, screenout) - and a **dynamic parameter** for the individual **participant ID** that the panel provider passes when calling up your survey. In this article, we'll show you step by step how to set up these redirects correctly in QUESTIONSTAR. > 💡 > > **Note:** The parameter names and values can vary from one panel provider to another — for example `reason=1` instead of `code=success` or `user=[uid]` instead of `respondentID=[ID]`. Additional parameters can also appear (e.g. `quotaID=2`). > > If you're unsure, simply forward this help article to your panel provider — they'll give you the exact URLs you need to enter in QUESTIONSTAR. ## Configuring participation links As soon as your survey enters the field phase, the panel provider calls up your questionnaire via an individual link — a unique participant ID is usually passed as a URL parameter, e.g.: [`https://survey.questionstar.com/4c531388?respondentID=123`](https://survey.questionstar.com/4c531388?respondentID=123) This ID — including the parameter name and its value — is captured and stored automatically by QUESTIONSTAR. It is then automatically re-appended to the relevant URL on every redirect (e.g. at the end of the survey, on a screenout, or when a quota is reached). **What you need to do:** Simply share the link to your survey with the panel provider. You'll find it in QUESTIONSTAR on the "**Distribute Survey**" view under the "**Link**" item in the left-hand menu. From this point on, the participant identifier is no longer relevant for setting up the redirects — you don't need to insert it manually into the redirect URLs. QUESTIONSTAR handles this automatically in the background. > 💡 > > **Note:** The panel provider can freely choose the parameter name (e.g. `respondentID`, `user`, `pid`). QUESTIONSTAR keeps this name and value exactly as it was passed in the link — including on the redirect. > > If you're unsure, simply point the panel provider to this documentation. ## Redirect on successful participation **Here's how to set up the redirect after the survey is completed successfully:** ![Redirect on successful participation](/api/media/file/1.-Weiterleitugn-bei-erfolgreicher-Teilnahme.png) 1. Open the survey settings and navigate to the "**At the End of the Survey**" section. 2. Select the "**Redirect to a specific URL**" option. 3. There, enter the panel's target URL **without the respondent ID** — e.g.: `https://panelanbieter.de?code=success` QUESTIONSTAR adds the ID parameter (e.g. `&respondentID=123`) automatically on exit. ## Redirect on quotafull **When a certain quota is reached** and no further participants with certain characteristics should be admitted, you can set up an automatic redirect for this as well: ![Redirect on quotafull](/api/media/file/2.-Weiterleitung-bei-Quotafull.png) 1. Switch to the "**Distribute Survey**" view. 2. In the left-hand navigation menu, select the "**Quotas**" item. 3. Create the desired quota, e.g.: *"100 male respondents aged 21 to 50"*. > 💡 > > **Note:** When defining complex quota conditions, watch out for common reasoning errors in the use of AND and OR combinations. You'll find more on this in our help article: [Common mistakes with display logic](/help/branching-and-display-logic/display-logic#fehler) 4. In the "**When the quota is reached**" section, select the "**Redirect to URL**" option. > 💡 > > **Note:** Panel services usually expect a direct technical response via the URL. Avoid selecting other options (e.g. your own quotafull page). If in doubt, clarify the desired behavior with your panel provider. 5. Now enter the panel's target URL without the respondent ID, e.g.: `https://panelservice.com?code=quotafull` QUESTIONSTAR adds the respondent ID automatically in the background. > 💡 > > **Note:** If your survey contains several quotas, additional parameters may need to be passed — for instance to identify the respective quota, e.g. `"aID=3`. ## Redirect on screenout **For screenout scenarios** — that is, when participants don't meet certain criteria and should therefore be excluded from the survey — you proceed similarly to the **quotafull redirect**. **The key difference:** ![Redirect on screenout](/api/media/file/3.-Weiterleitung-bei-Screenout.png) 1. Set the maximum number of participants to **0**. This defines that **not a single respondent** with these characteristics should take part — e.g. if someone has **had no experience with your product** in the past 12 months and therefore can't give an informed opinion. 2. In the "**When the quota is reached**" section, set the "**Redirect to URL**" option and enter the **panel provider's screenout URL** — **without the respondent ID**, e.g.: `https://panelservice.com?code=screenout`→ The respondent ID is **appended automatically by QUESTIONSTAR** on redirect. > 💡 > > **Note:** > > - If there are **several screenout conditions**, some panel providers use additional parameters — e.g. `screenoutID=2`. Clarify this with the provider in advance if necessary. > - **Avoid other options where possible** in the "When the quota is reached" area — since panel providers usually expect a precise URL-based response. > 💡 > > **Example questionnaire:** > The example discussed in this article is implemented in this questionnaire: > > *[Interaktiv: — siehe HTML-Version der Seite]* > > Copy it into your account to review the details of the implementation. ## Sharing the current quota fill level with the panel provider So that your panel provider can assess **how many more participants to send**, it needs access to the **current quota fill level**. QUESTIONSTAR provides a clear **live report** for this, which you can simply pass on. ![Sharing the current status with the panel provider](/api/media/file/4.-Aktuellen-Stand-mit-Panelanbieter-teilen.png) To do this, on the quotas view click the "**Open quota filling report in new tab**" button, copy the link from your browser's address bar and send it to your panel provider (see [example](https://survey.questionstar.com/Report/Quotas/62241429-e05c-4427-9fe9-ff326f804f03)). > 💡 > > **Tip:** If needed, you can show your survey respondents the current quota fill status in the questionnaire. The details for this are [described in this help article](/help/advanced-features/piping-reusing-answers#quoten). *[Interaktiv: — siehe HTML-Version der Seite]*