*除了上述以外，还有同一个plant下面的storage location的stock transfer。如果是two-step的，movement type分别是313和315。
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Stock Transfer Between Plants in One Step 
Use
This type of stock transfer can only be carried out in Inventory Management. Neither Shipping in the issuing plant nor Purchasing in the receiving plant is involved in the process.
Transferring stock in one step has the following characteristics:
- The stock transfer is entered as a transfer posting in Inventory Management.
- The transfer posting can be planned by creating a reservation.
- The quantity of the stock transferred is posted immediately from the unrestricted-use stock of the issuing plant to the unrestricted-use stock of the receiving plant
- The transfer posting is valuated at the valuation price of the material in the issuing plant.
- If the plants involved belong to different company codes, the transfer between plants is also a transfer between company codes. In this case, the system creates two accounting documents for the transfer posting. The stock posting is offset against a company code clearing account.
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Stock Transfer Between Plants in Two Steps 
Use
This type of stock transfer can only be carried out in Inventory Management. Neither Shipping in the issuing plant nor Purchasing in the receiving plant is involved in the process.
The stock transfer includes the following processes:
- A goods issue in the issuing plant
- A goods receipt in the receiving plant
Transferring stock in two steps has the following characteristics:
- The transfer posting cannot be planned by creating a reservation.
- The quantity posted from stock is first of all managed as stock in transfer in the receiving plant. Only once the goods receipt has been posted is the quantity posted to the unrestricted-use stock of the receiving plant.
This enables the quantity "on the road" to be monitored.
- The transfer posting is valuated at the valuation price of the material in the issuing plant.
- If the plants involved belong to different company codes, the transfer between plants is also a transfer between company codes. In this case, the system creates two accounting documents when the goods issue is posted. The stock posting is offset against a company code clearing account.
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Stock Transfer between Two Plants with One Company code.
The Purchase Order Type is Used in this case is "UB".
And the Delivery Type Used here is "NL".
Goods Movement type: 641
Item Category in delivery is NLN
STPO: - Stock Transfer Purchase Order – Inter Company
Stock Transfer Purchase Orders between Two Plants with Two Different Company Codes.
The Purchase Order Type is Used in this case is "NB".
and Delivery type used here is NLCC
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The 1 step / 2 step option can be set in the cusomizing:
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Q: the difference betwwen movement type 351 and 641. --- 641 w SD delivery, 351 w/o SD delivery.
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Movement Type:
| Movement Type | Description | Reverse |
| 101 | Goods receipt for PO | 102 |
| 121 | Subsequent adjustment for subcontracting | N.A. |
| 122 | Return delivery to vendor with original PO | 123 |
| 161 | Return delivery to vendor with return PO | 162 |
| 301 | Transfer posting from site to site | 302 |
| 311 | Transfer posting from storage location to storage location | 312 |
| 309 | Transfer posting material to material | 310 |
| 321 | Transfer posting stock in QI to unrestricted use stock | 322 |
| 343 | Transfer posting from Blocked stock to Unrestricted used stock | 344 |
| 501 | Goods receipt without PO - unrestricted use stock | 502 |
| 541 | Transfer posting unrestricted-use stock of material provided to subcontractor | 542 |
| 543 | Consumption from stock of material provided to vendor | 544 |
| 561 | Initial entry of stock | 562 |
| 601 | Goods issue for delivery | 602 |
| 641 | Goods issue for STO (two steps) within same company | 642 |
| 643 | Goods issue for CCSTO (two steps) cross company | 644 |
| 647 | Goods issue for STO (one step) | 648 |
| 701 | Inventory differences in unrestricted-use stock | 702 |
| 703 | Inventory differences in QI stock | 704 |
| 707 | Inventory differences in blocked stock | 708 |