Partner Determination is not working as expected

HI Experts,

This is regarding Partner determination .

Scenario: We are using a Business Activity functionality.  We have some BP types Organizations(sold to party) and we assigned Key Account Manager(Employee relation ship).

When user created a Business Activity  with Sold to Party, system should automatically determine the few things:

1. Sold to party-----------which is working fine

2.Employee Responsible(the user)--------------which is working fine.

3. Key Account Manager-------------------------It is not working.

When I see the log , it is saying that Deadlock exist.

Please could you help me , what access sequenece I need to take to make this work.

THanks

Madhu