Unable to Map Customer Locations to a Zone/Region

Hello Experts,

I have created a New customer Location and I was trying to Map to a region. Below are the steps I have followed.

select * from wsh_regions;

---No Regions Found---

1) Run Import 'Shipping Locations Program' with Map Regions=Yes ,Location type:Both

2) Run 'Location to Region Mapping' with Parameters Mode:Create New Regions

A new record inserted in WSH_REGION_INTERFACE Table

3) Run 'Region interface Program'

Error Message(Log File):

''Started the region upload process...

ERROR processing region: United States, CA, SAN JOSE, 95148-3205

error message: Region with the same name or code already exists. Please change the name or code