Credit Check Packing/Purchase Release Rule

Dear gurus,

we're facing an issue using credit check functionality on EBS 11.5.10.2 when we release a SO:

SETUP

1. Credit Check and Limit Setup completed for:

     - Customer Site and Bill To

     - Payment Terms,

2. Transaction Type Credit Chek Rule Setup:

     - Ordering

     - Picking/Purchase Release

     both at Sales Order level without override manual release, without Pre-Calculate exposure, including Uninvoiced Orders + Tax + Order currently on hold

CASE

1. Assign credit limit = 200.000 USD to a customer site

2. Create a SO having 150.000 USD as Total Amount and book it (lines in AWAITING SHIPPING)

3. Create a second SO having 75.000 USD as Total Amount and book it --> Credit Check puts the SO on hold