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  4. Panel Provider Instructions: How to forward to Survalyzer

Panel Provider Instructions: How to forward to Survalyzer

Introduction

This article is written for external panel providers.

You received this page from your client (the Survalyzer user) to explain how to forward your panel respondents into a Survalyzer survey and how participant IDs should be passed along. The goal is to ensure that respondents can be correctly identified and routed back to your system after the interview.

Use this guide when setting up survey links in your panel system.
No configuration inside Survalyzer is required on your side.

To set up the forwarding, you were provided with an URL that looks similar to this one:

 https://survalyzer.survalyzer.eu/wdnionbihl?l=en&urlvar01=%member_id%

That URL is an example.

Pass the participant ID using urlvar01

The member id from your panel is usually saved in the “urlvar01” of a Survalyzer survey. In the example URL above, the part you’d need to replace with the individual member ID would be “%member_id%”.

If additional variables are needed for the forwarding, then you can add additional variables by using up to 20 so called “URL variables”.

The variables are just numbered, so as we used “urlvar01” for the first URL variable, the second would be “urlvar02”, third “urlvar03”, up to the twentieth “urlvar20”.

Add additional URL variables if needed

Here is an example with a zip-code as a second variable:

https://survalyzer.survalyzer.eu/wdnionbihl?l=en&urlvar01=%member_id%&urlvar02=%zip_code%

Inform your client about used variables

Please inform your client (the Survalyzer User) which information you forward to the Survalyzer survey, and which URL variables you used for each information.

Always use urlvar01 for the participant ID

To keep it simple, please always use “urlvar01” for the member ID that will be needed to forward the member back to you.

Updated on June 9, 2026
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