🔹 Fixed Bin
| Feature | Description |
|---|---|
| Definition | A bin that is permanently assigned to a specific item. |
| Use Case | Used for fast-moving or frequently stocked items. |
| Behavior | When receiving or picking items, Business Central prefers the fixed bin for that item, if available. |
| Setup | Assigned in the Item Unit of Measure or Bin Contents page with the Fixed check box marked. |
| Example | Bin A01 is always used to store Item 1001. Even if there’s space in other bins, the system will prioritize A01. |
🔹 Floating Bin
| Feature | Description |
|---|---|
| Definition | A bin that is not permanently assigned to any specific item. |
| Use Case | Ideal for overflow, random storage, or temporary stock placement. |
| Behavior | The system dynamically assigns items to available bins based on availability, capacity, or rules. |
| Setup | No “Fixed” flag is marked for these bins. |
| Example | Bin B15 might hold Item 1001 today and Item 2003 next week. It depends on space and warehouse activity. |
✅ Summary Table
| Criteria | Fixed Bin | Floating Bin |
|---|---|---|
| Permanence | Always reserved for one item | Used by any item temporarily |
| System Preference | System defaults to this bin | System uses it as needed |
| Setup Required | Yes (Fixed checkbox enabled) | No special setup |
| Best For | Fast movers, regular stock | Overflow, irregular stock |
| Bin Contents Stability | Predictable | Dynamic |
🔹 Scenario Setup
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Location Code: WAREHOUSE
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Item No.: 1001 (Widget)
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Bins in Warehouse:
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A01→ Marked as Fixed for Item 1001 -
B15→ A Floating bin (not fixed to any item)
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Stock Levels:
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A01(Fixed bin): 5 units of Item 1001 -
B15(Floating bin): 10 units of Item 1001
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A Warehouse Pick is created to fulfill a Sales Order of 12 units of Item 1001.
🔹 How Business Central Picks Items
✅ Step-by-Step Behavior
System Checks Fixed Bin First:
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Bin
A01is fixed for Item 1001. -
It has 5 units, so Business Central allocates 5 units from A01.
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System Needs 7 More Units:
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Since
A01doesn’t have enough, Business Central checks other available bins. -
It finds
B15has 10 units.
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System Allocates from Floating Bin:
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Business Central allocates the remaining 7 units from B15.
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Warehouse Pick Document is generated:
- Line 1: Pick 5 units from Bin A01 (Fixed)
Line 2: Pick 7 units from Bin B15 (Floating)
- Line 1: Pick 5 units from Bin A01 (Fixed)
🔸 Why This Matters
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Fixed bins ensure consistency for warehouse staff (they know where to find common items).
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Floating bins offer flexibility and optimize space usage by allowing overflow or random placement.
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Business Central uses a bin ranking system and fixed bin priority logic to balance structure and efficiency.
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