Below please find the email from Alan Cartwright which has been self-explanatory.
As far as my understanding, the previous practice within AMEA region was that Intercompany invoice billed to Interdean was cutoff on the 25th but other Intercompany was month-end. Please note that with effect from Feb 2016, all Intercompany invoices will be cutoff on the 25th. No Intercompany invoice should be issued from RA during 26th to 30th. External invoice remains unchanged.
Owing to Chinese New Year holiday, there may have some backlog to catchup. In this connection, for Feb month only, Finance teams will accrue the revenue & COS for the non-Interdean Intercompany unbilled jobs. However, going forward, no accrual will be made. We therefore urge you to bill timely.
Kindly let me know should you have any queries.