I tried to create a host via FAM, which didn't work, so I tried Hammer and it gives the same error.
I also tried to create a host without a host group and with different settings, but nothing helped.

Using a other Image/OS didn't help too.

Using the webui works fine

Steps to Reproduce:
1. create a image for vmware and add it to foreman
2. Use this image to create a host via hammer/FAM
3. This error appers:
Failed to create a compute VMWarecluster (VMware) instance name.i.t.t: comparison of String with 26214400 failed