SAP CLM add line items

Hello,

After importing master data in CLM from ECC, I created a contract and in the line items tab I click on Add button and is not adding lines, I tried to import the lines and it failed with the following error message:

# Failed: object 1: There is no default Unit Of Measure defined for the category_id of 'No Dimension'.

So I downloaded the units of measure xml again from ECC and tried to upload in CLM and all records fails with the following error:

While trying to invoke the method java.lang.Boolean.booleanValue() of an object loaded from field com.sap.odp.doccommon.masterdata.UnitsOfMeasureBo.bPrimaryUnit of an object loaded from local variable 'this'

The first time I did it was uploaded with succeed message.

I will appreciate your comments

thanks