A more organisatoric view in this planning situation is showed by clicking this area.
The UPPER-LINE in the matrix shows the amount of final products, included the percentage sortie-products. This percentage can be calculated by a formulae with the following elements:
| D = wanted PRODUCTIONAMOUNT |
| U = PRODUCT SORTIE during the production by malfunction |
| / = divided by ( ) = this calculation must be done before others in the formulae |
| * = multiply by |
formulae : 100 / (100 - U ) * D = production-amount of final products inclusive the sortie.
The first part of the formulae 100/(100-U) is called the sortie-factor. This calculation leads to the final production amount, by example: For a desired amount of 3000 ex. final products and a product sortie of 5% is the amount of manufacturing: 100 / ( 100- 5 )* 3000 = 3157 ex.
The SECOND LINE in the matrix gives an eventual amount of products wich are manufactured by an external supplier. This situation brings up the factor delivery-time which has to be noticed in time, because of the total planning. This external supplier produces an amount of 100ex. and the time he needs for this activity is 1 week. The difference between the order- and the delivery time in the table is 1 period, which means that the delivery time is 1 week.
The THIRD RULE is clear enough. It is the amount of final products in stock. This amount contents a safety percentage which can be calculated by a formulae, presented in a next paragraph.
The FOURTH RULE in the matrix gives the amount of ordered material to produce final products. This line shows the moment on which these materials are arranged. Most of the time a product is assembled, which means that all the parts must be listed separately and forming together a total product. On the top of this table there must be clear announcement if this table is a final productamount or a part from a final product.
The FIFTH LINE is the amount AND moment of ordering the materials for production. If the goods must be delivered, there is again a factor delivery-time to be counted with, in this case a delivery time of again 1 week, showed in the difference between rule4 and rule5.
The amount of goods in red ciphers shows an expected delivery-amount, produced by an external supplier. This means that the stock amount is expanded with 100ex. but the sale in period 15 is also 100ex, which gives a nivellation. Because of the forecast sale of 500 in period 17, is the prognose for the stock negative. This is why an order is planned in the period 16, which is 1 week before the time the goods are necessary. This 1 week is the standard deliverytime of this supplier, and the amount of 500ex is an restricted amount. Because of the equality in buying and selling the stock amount is stabile, which means that the planning is all right.