10000167 
Message
Connected business partner type will be updated
Diagnosis
You have opened the Business Partner Master Data window, and from the list to the right of the Code field, you have changed the business partner type. However, this affects the connected business partner that has been specified and the accounting system.
When the connected business partner is specified for a given business partner, SAP Business One automatically creates an opposite connection. Thus, when the current business partner is a customer, the connected business partner is a vendor, and vice versa. If you change the business partner type of the current business partner, the connected business partner type changes accordingly.
Procedure
In the Business Partner Master Data window, select the Accounting tab.
If the selected business partner type is Customer, a Connected Vendor field is displayed.
If the selected business partner type is Vendor, a Connected Customer field is displayed.
Make sure that the connected business partner and business partner type are suitable for your needs.