Getting error while activating MM data model

Hi Experts,

I am getting below error while activating MM data model.

An open change already exists in client *** for this data model.

I tried option USMD_ADJUST_STAGING and USMD_DELETE_CREQUEST.

But nothing is working.

Some body have created 1 entity earlier, but i think forget to do adjustment. I tried with SMT mappings with that entity, but still no win.

Please let me know how can i make extension in MM model and activate.

Thanks

Regards

Nitish Sharma