When a XIF file contains NCI's (SCPT's and UCPT's) default values (NVVAL) must be described in the XIF file. In some cases if NCI's are present, but some or all NVVAL initializers are missing commisioning the device will fail.
For information regarding NCI's that are part of a FILE definition, please refer to article #16923
When commisioning a device default values to configuration variables must be assigned. If the tool (TAC Vista, SmartStruxre, LonMaker, NL220) doesn't know what default value to assign it can cause an error.
Make sure all NCI's have proper initializers defined. Read this guide as reference.
Here is an example of a NVVAL section: