SD Picking and PGI Part 3: Picking Confirmation and Its Integration with Inventory and Accounting

📌 KEY POINTS
✅ Picking confirmation sets picked quantities in the delivery — manually, from WM transfer order confirmation or from EWM.
✅ Differences (short picks) require adjusting the delivery quantity to the picked quantity before PGI, or repicking.
✅ Batch split creates batch sub-items when one item is picked from several batches.
✅ PGI creates a material document (stock) and an accounting document (inventory/COGS); both reference the delivery.
⚠️ Reversing PGI (VL09) reverses stock and accounting, but billing must be cancelled first if it exists.

━━━━━━━━━━━━━━━━━━━━
▶ WHERE WE ARE
Part 2 configured relevance, locations and posting. Now confirmation and its effects.

━━━━━━━━━━━━━━━━━━━━
▶ 1. CONFIRMATION SOURCES

• Lean: user enters picked quantity in the delivery.
• WM: transfer order (LT03) confirmed (LT12) → delivery updated.
• EWM: warehouse tasks confirmed → delivery updated from EWM.

━━━━━━━━━━━━━━━━━━━━
▶ 2. DIFFERENCES

• Short pick: adjust delivery quantity to picked (option in delivery or WM/EWM).
• Remaining quantity goes back to the order as open (backorder).

━━━━━━━━━━━━━━━━━━━━
▶ 3. BATCHES AND SERIALS

• Batch determination proposes batches; batch split sub-items.
• Serial numbers assigned before PGI if required.

━━━━━━━━━━━━━━━━━━━━
▶ 4. PGI EFFECTS

• Stock: storage location quantity reduced; valuation at moving/standard price.
• Accounting: inventory credit, COGS debit; CO-PA/margin analysis cost of sales.
• Order: delivery status updated; requirements cleared.

━━━━━━━━━━━━━━━━━━━━
▶ 5. REVERSAL

• VL09 creates 602 reversal; delivery reopens for change.
• If billed: cancel invoice first (VF11).

━━━━━━━━━━━━━━━━━━━━
▶ STEP BY STEP

1. Create a delivery with a batch-managed item.
2. Pick from two batches (batch split).
3. Record a short pick and adjust the delivery quantity.
4. PGI and check stock and accounting documents.
5. Reverse with VL09 and re-post.

✅ CHECKPOINT: stock, accounting and order status are consistent after PGI and after reversal.

A distribution center regularly had PGI errors "picked quantity differs from delivery quantity" after short picks in WM, and staff overrode by changing picked quantities manually, causing stock differences. The process was changed: WM confirmation with difference handling adjusting the delivery quantity automatically, and remaining quantities flowing back as backorders. Manual overrides were restricted by authorization. Inventory differences dropped sharply.

• Changing picked quantity manually to force PGI.
• Reversing PGI without cancelling the invoice first.
• Ignoring batch split rules.
• Not handling short picks as backorders.
• Serial numbers missing at PGI.

• Let WM/EWM confirmation drive picked quantities.
• Adjust delivery to picked quantity for short picks.
• Keep reversal sequence (invoice → PGI).
• Monitor picked-not-issued deliveries.
• Restrict manual picked quantity changes.

Questions: "How is picking confirmed with WM/EWM?", "What happens with a short pick?", "How do you reverse PGI?"
Strong answer: lean, WM (TO confirmation), EWM (warehouse task) updating picked quantities; short picks adjust delivery quantity and leave backorder; batch split; PGI material and accounting documents; reversal VL09 after invoice cancellation.