Reservations are requests to the warehouse to have materials ready for issue at a later date and for a particular purpose.

A reservation can also be used to plan an inward movement in advance.

A reservation ensures that a material is available when it is needed.

Analyses are available for material and account assignment.

Important functions to create or change reservations:-Approve movement,-Set deletion indicator,-Change base date.

Initial situation:Stock 100 pcs

Reserved 80 pcs for today + 2D

Ordered 50 pcs for today + 4D

New reservation:

2.1 Reservation of 30 pcs for today + 1d => warning message

2.2 Reservation of 30 pcs for today + 3d => warning message

2.3 Reservation of 30 pcs for today + 5d => ok, no warning message

2.4 Reservation of 80 pcs for today + 5d => warning message

If the dynamic availablility check is actively set for a type of reservation, imminent material requirements are included in the availability check.

The management program for reservations can carry out both reorganization of the reservation file and mass change to reservations.

To do so, it carries out the following actions. It:- marks items for deletion,- deletes reservations (these are not archived),- allows movements for reservation items.

The management program only includes reservations that have been created manually.

You can change the field selection depending on the movement type.

Goods issues can be planned or unplanned.

The data to be entered depends on the type of goods issue. The system prepares various account assignment fields, depending on the movement type and system configuration. The system uses automatic account determination to automatically determine the G/L account to which the movement is posted. You only have to enter a G/L account if you want to post the goods movement to another account.

If a material is no longer of use, it is posted to "scrapping". If a material is destroyed, this information must also be entered in the system. Material can be scrapped from unrestricted-use stock, stock in quality inspection, and blocked stock. The effects of scrapping are:

the stock in question is reduced,

the value of the scrapped material is posted from the material stock account to the scrap account.

the cost center that you enter is debited.

Taking a sample is a goods issue that is generally done in connection with a quality inspection. The SAP sampling procedure provides you with the means of being sure that the sample for testing is taken from the existing stock. The sampled goods are treated as destroyed, in other words, the system assumes that the material can no longer be used after the quality inspection. In this way sampling is the same as scrapping, with the exception that the value of the sampled material is posted from the material stock account to the quality inspection expense account.

Movement types can be changed within the entry of a goods issue.

Combination of all entry techniques possible.

Movement types may vary for each item.

Collective entry possible, even for different account assignments in a material document.

A prerequisite for goods issue is that the movement is allowed for the reservation item.

Restriction by storage location possible.

Extended selection regarding requirements date.

Proportion of the proposed quantity possible.

The system updates the quantity withdrawn and the corresponding value in the reservation.

You can set the final issue indicator. This means that the reservation item can be considered as completed.

You cannot make reference to the reservation. All data required for the goods issue is entered directly when the goods issue is posted.

Stock determination is a function that can be used on a cross-application basis. It enables you to determine the stock type from which materials should be withdrawn for withdrawing, picking, and staging transactions.

Stock determination allows you to lay down strategies for material withdrawals by using predefined settings. This function is used in several applications, and is therefore important to the integration of the sytem as a whole.

The stock determination group is entered in the material master at plant level, and controls material-related stock determination.

The stock determination rule is assigned by the application in which it is called.

The stock determination group, along with the stock determination rule, forms the unique key for the stock determination strategy at plant level.

Stock determination strategy defines which stocks can be considered for a transaction (special stock indicator, storage location), which preferences are to be included (sorting criteria), which priority these preferences should have when they are combined with other strategies, or whether stock determination is carried out online or in the background.

Prior to Release 4.0, you could only have negative stock balances for materials with standard price control.

As of Release 4.0, you can also manage negative stock balances for materials with moving average price control. Furthermore, you can have negative stock balances for special stocks, such as vendor consignment, material provided to vendor, sales order stock, and project stock.

Negative stock balances are required if, for organizational reasons, goods issues are entered before the corresponding goods receipts, and the material is already physically located in the warehouse.

Once you have posted the goods receipts, the book inventory balance should correspond with the physical stock again, in other words, it should no longer be negative. Negative stocks always indicate that physical movements have to be entered in the system at a later stage.

If you work with negative stock balances, you have to ensure that you do not have negative stock balances when you carry out a physical inventory and on the balance sheet key date.

To work with negative stock balances, you have to allow these for the valuation area and storage locations in Customizing for Inventory Management.

You make the settings for negative stock balances in Customizing for Materials Management -> Inventory management -> Goods issue / Transfer postings -> Allow negative stocks.

If the first movement of a material is an outward movement, in Customizing you can activate automatic creation of storage location data for goods isues in the step Create storage location automatically.

SAP AGTAMM10 4.0B24-1