Bulk Change (unlock) fails with Exception in validateChangeType

[petzsch]

Hi,

I'm having a hard time getting out a bulk_change request with the toolkit. It seems that the toolkit doesn't see the op_type which i pass in the data array. It's either me or the validation is bogus.

Maybe someone can point me in the right direction - I looked through the validation code and didn't see an issue. Here is my client and the response I get:

my code: http://pastebin.com/hfv6DnEn
the response: http://pastebin.com/TQGavAtM

Any help is highly appreciated.