Found these things in my Miele dishwasher - what are they?

[osuilleabhain]

Found these two things at the bottom of the dishwasher when I was refilling the salt. Ever since, have been getting an F12 error code. Any idea where they need to be inserted? I presume they fell out of somewhere....

 

[mcprinter]

A google of the image suggests part of your basket wheels.

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