As per my understanding :
Warehouse request is similar to transfer of requirements.
Warehouse Order is similar to Transfer Orders.
If iam not wrong pls go through this...
Transfer Requirement Locate the document in its SAP Library structure
Definition
This is a document that serves to plan goods movements using the Warehouse Management System (WMS).
By differentiating between the planning and execution of a goods movement, you can recognize immediately whether a goods movement needs to be still executed (transfer requirement is open), is currently being executed (transfer order is created), or is completed ( transfer order is confirmed).
Use
On the one hand, transfer requirements are used to pass on information on goods movements that are posted in Inventory Management (MM-IM) to the Warehouse Management System (WMS). You can, however, also use transfer requirements for the following purposes:
To initiate goods movements in WMS
To initiate material replenishment for production storage bins in the production supply areas using the Production Planning (PP) component
To call up transfer requirement reports in order to get an overview of all pending goods movements
On the basis of existing transfer requirements, the Warehouse Management System creates transfer orders, which, in turn, serve to execute the physical goods movements in the warehouse.
The system updates the transfer requirement:
When you create, confirm or cancel a transfer order
When you cancel a goods receipt or goods issue posting in Inventory Management (MM-IM) before the respective transfer order was generated in the Warehouse Management System (WMS).
In this case, the system automatically reduces the transfer requirement quantity by the quantity to be canceled, or it deletes the transfer requirement altogether if the entire requirement quantity is to be canceled.
Structure
A transfer requirement consists of a transfer requirement header with general information and one or several transfer requirement items with material information (see the section Creating Transfer Requirements).
The transfer requirement contains all the necessary information on a planned goods movement.
What should be moved?
Which quantity should be moved?
When should it be moved?
The planning date is important for further automatic processing.
Which transfer type is the basis of the goods movement?
Each goods movement in the warehouse is classified by a transfer type indicator. This key differentiates between:
A stock putaway
A stock pick
A stock transfer
Why is it to be moved?
Was the transfer order created as a result of a purchase order or a production order, or was it created manually?
Transfer Order
Definition
Document used for executing goods movements with the help of Warehouse Management (WM). Logical, physical goods movements or stock changes can be the basis for a transfer order. These include:
Picks
Putaways
Posting changes
Repacking
Inventory
Use
As a rule, you create the transfer order with reference to a source document from WMS or other SAP application components. A source document can be a:
Delivery document
Tansfer requirement
Material document
Posting change notice
The transfer order contains all the information required to execute the physical transfer of materials into the warehouse, out of the warehouse, or from one storage bin to another storage bin within the warehouse. In addition, it is also used for executing logical stock transfers. Logical transfers of stock occur, for example, when goods are released from inspection and made available for general use. These logical transfers are called posting changes in WM.
When you confirm a transfer order, you inform the system that it has been processed and that the goods have arrived at the intended destination (see the section on confirming transfer orders). If the planned quantity (target quantity) differs from the actual quantity of stock that is moved, a difference quantity exists. If you confirm a transfer order with a difference, the difference quantity is automatically posted to an interim storage type for differences (see the section on stock differences).
Once they have been carried out, transfer orders also have a control and monitoring function since they document movements in the warehouse (see Warehouse Controlling).
For certain inventory methods (for example, zero stock check, inventory based on putaway), transfer orders serve as inventory documents. In this case, when the actual quantity is confirmed (after the first putaway into a storage bin), it is updated in the system as the inventory quantity.
Structure
A transfer order contains all the necessary information on a planned goods movement.
What should be moved?
Which quantity should be moved?
Where should the bin be moved from (source storage bin), and where to (destination storage bin)?
The transfer order consists of a transfer order header with general information and one or several transfer order items with material information (see the section on creating transfer orders).
Transfer Order Header
The transfer order header contains the transfer order number and the date that it was created and confirmed. It also identifies the transfer requirement or delivery on which it is based as well as the movement type.
Transfer Order Item
A transfer order can have one or several items. The number of items contained in a transfer order depends on how many storage bins the system accesses in order to reach the total quantity of goods needed for the picking requirement or how many bins are needed to store the goods (putaway).
A transfer order item contains subsections that specify the direction of the goods movement for each item.
Source storage bin
This subsection contains the source storage bin and the quantity of material that is being transferred. It indicates the storage bin from which goods are to be picked (goods issue) or an interim storage type (such as the goods receipt area) from which goods are taken to be put away in the warehouse.
Destination storage bin
This subsection contains the quantity of material that is being transferred and the storage bin into which the goods are to be put away. For example, it may contain a storage bin in a high-rack storage area that has been selected for a stock putaway, or an interim storage type (the goods issue area) for a stock pick.
Return storage bin
If, for example, you have the complete stock requirement set and you pick more stock than required from a storage bin, the system creates a subsection for the return storage bin. This can be the case, for example, when a complete pallet is removed from the shelf, but only a portion of the materials on the pallet is picked. In this case, the remaining quantity can either be returned to its original storage bin or transferred to another one.
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