AP Invoice Distribution Data with PA_ADDITION_FLAG='G'

Dear Project Costing Gurus,

  Looking into AP_INVOICE_DISTRIBUTIONS_ALL data in our test environment,

I found data that have the value 'G' in PA_ADDITION_FLAG column. 

However, this 'G' code does not exist in Projects' lookup type, 'PA_ADDITION_FLAG'.

The list of existing values in the lookup is as follows:

A    Accumulation error (obsolete in V4)

B    No open PA period

C    Task does not allow charges

D    Outside project dates

E    Non-project related invoice distributions

I    Outside task dates

J    Project level transaction controls violated

K    Task level transaction contols violated

M    Invalid project/task combination