Error Code 01561: Meaning & Troubleshooting

I ran a check today, and it immediately reported the following:

Thursday, June 14, 2007, 08:12:40:38336
VAG-COM Version: RKS 704.1

Address 35: Central locking.
Control unit part number: 4B0 962 258 E.
Component and/or version: Central locking system, DWA D32.
Encoding: 05707
Workshop Number: WSC 02325
"One error found:"

01561 - Rear left door.
61-00 - not applicable.

How can I fix this now, or what isn't working?

[Translating...]

http://wiki.ross-tech.com/index.php/01561

Thank you very much.

I already found it, but I was hoping there might be a German version as well.
Sure, I'll translate that for you.

"Nevertheless, thank you for your effort!!!"