Idea:

In Business Central, when a user changes the Vendor Posting Group at the Purchase Order level and applies a Prepayment %, the prepayment invoice should respect and use the newly assigned Alternative Posting Group instead of defaulting to the original one defined on the Vendor Card.

Current Behavior:

Despite configuring Multiple Posting Groups and selecting an Alternative Posting Group, the Prepayment Invoice continues to post against the default Vendor Posting Group, ignoring the change made at the document level.

Why it's important:

• This behavior causes inaccurate financial postings to G/L accounts.
• It creates additional manual adjustments and reconciliation tasks.
• It undermines the flexibility that Multiple Posting Groups are meant to provide.
• Users expect that a manual override at the Purchase Order level should be respected for all related transactions, including prepayments.

Proposed Enhancement:

Update the system logic to ensure that when a Vendor Posting Group is changed on a Purchase Order, any prepayments or related postings honor that change throughout the document lifecycle.

Benefit:

• Improves posting accuracy
• Reduces manual workarounds
• Aligns with user expectations when using multiple posting groups
• Supports industries where vendors/customers span multiple segments with distinct financial postings

Thank you!