Failed to map cmdb_ci_ot_isa_entity

[AlfiyaK]

I wanted to map site data into cmdb_ci_ot_isa_entity and according to requirement path attribute should be generated  automatically with provided data for Site attribute and short code attribute. But If I map data to path field then only its creating record in cmdb_ci_ot_isa_entity table otherwise it doesn't even creates any record.

Expectation: app should be able to generate path filed based on data given to Site+ short code 

[AlfiyaK]

have not written any customise BR, cmsb_ci_ot_isa_entity already have BR to calculate entity path and according to requirements path should be populated using that BR only which is servicenow feature.