When the supplier and customer having same name like abc, the system is not allowed to be defined w

Hi Team,

When the supplier and customer having same  name like abc, the system is not allowed to be defined with the same tax registration number and it gives the error below.

" The tax registration number is already in use for party type.third party and party name XXX for the same period."

When this error occurred we need to define this tax registration number .We firstly erase the tax registration  number  in customer and then trying to define the tax registration number in supplier page for the related name .

Once this definition is completed in supplier side, we need to update the same in customer side also.