If this check box is selected, a purchase order must be entered. Clear the check box if the line is not to be based on a purchase order.

There are two possible scenarios:

Via purchase order is selected:	The software checks the purchase order and the purchase order line to determine whether the purchase was made for stocking purposes or for a sales or production order. This destination is automatically entered in the Type field. You cannot modify the field.
Via purchase order is not selected:	For parts: You choose whether to post to 'Sales', 'Production', 'Costs' or 'Unplanned production'. For equipment: The posting is to be made against the production order for which the equipment was purchased.

If the type is 'Sales', use these fields to record why the part was purchased.

If the type is 'Production order' or 'Production order, unplanned', use these fields to record why the part was purchased. In the case of an unplanned purchase, usually no part line exists yet. You can therefore leave this field empty.

Note: An unplanned purchase invoice line can be specified only if the Allow unplanned purchase invoice lines check box on the Basic data form is selected.

This is the unit in which the item was purchased. It can be stock units (Parts form, General tab), or purchase units (Parts form, Purchase tab).

Use the Calculation unit field to specify the unit the price applies to. You can choose from the following options:

Unit	This is the stock unit that has been set on the General tab of the Parts form.
Weight	Kilograms
Surface area	Square meters
Purchase unit	This is the purchase unit set on the Purchase tab of the Parts form. This option is only available for the calculation unit for the purchase price.
Sales unit	This is the sales unit set on the Sales tab of the Parts form. This option is only available for the calculation unit for the sales price.

Note: The calculation unit shown to the right of the Price units and Per fields will not be refreshed until you have saved the change on the form.

This is the VAT code applicable to the purchase invoice line, for example 'Domestic purchase, high'. By default, the field is filled in based on the financial parameters. The VAT code field on the purchase invoice lines is an informational field and is independent of the VAT sums in the purchase invoice header.

This field shows the ledger account to which the costs will be posted.By default, the field is filled in based on the financial parameters.

To prevent a user from changing this ledger account, you can lock the field on the Financial form by selecting the Lock ledger account on purchase invoice line check box. In the case of indirect costs, it is still possible to change the ledger account, even if the field is locked.

Note: You are recommended to block the ledger accounts used as (system) suspense accounts in Isah, such as WIP accounts, for manual posting. This will prevent any sums being posted to the suspense accounts accidentally (via the purchase invoice lines that are posted indirectly).

If the Type field is set to 'Costs', specify the cost center to which the costs invoiced are to be posted. You must specify a cost center if you are using a ledger account number for which specification of a cost center is required. This requirement is configured for each ledger account on the Ledger accounts form.

Initially, this authorization involves checking the purchase invoice lines. The details of the purchase invoice are compared with the details of the purchase order, as displayed in the Purchase order section. Isah then shows the result of this comparison in the Authorization field:

Total quantity invoiced higher than received
Price does not match purchase order
Discount does not match purchase order
Total amount invoiced higher than purchase order
Required cost center is missing	This message will only appear if the purchase invoice was imported using Supply Chain Integration, the Cost center required setting was enabled, and this information was not present on the electronic purchase invoice. Enter a cost center in order to be able to authorize the line.
Invoice line authorized:	This setting is the minimum setting required for processing the purchase invoice. This authorization also indicates that more receipts and purchase invoices are expected for this purchase order line.
Invoice line authorized; last invoice:	This setting indicates that no more purchase invoices are expected for this purchase order line. When the purchase invoice is processed permanently, the suspense accounts 'Commitments' and 'Invoices payable' are cleared once. When the quantities and/or prices on the purchase order differ from those on the purchase invoice, then those differences will be posted to the contra account 'Price differences'. If another invoice arrives, you can post the invoice for the purchase order in the usual way, after which the balance of the contra account 'Price differences' will be updated.
Inspect

It is possible to change the authorization type in this field in order to accept a difference in quantity, price or discount, so that the purchase invoice can be processed. You can also keep a line blocked, however, to prevent the purchase invoice from being processed.

To process a purchase invoice in its entirety, ALL purchase invoice lines must have the authorization type 'Invoice line authorized' or 'Invoice line authorized; last invoice'.

This field specifies the number of goods invoiced on this purchase invoice line.

Note: This field shows the quantity in the unit in which it was ordered (Unit field in the Part section).

Whether or not the Length, Width and Height fields can be filled in depends on the unit code of the unit in which the item was purchased (Purchase unit or Stock unit).

If the unit code is set to 'Quantity', no length, width or height can be specified. Only those items specified in the unit code can be entered.

Unit code	Can a length be filled in?	Can a width be filled in?	Can a height be filled in?
Quantity	No	No	No
Quantity * Length	Yes	No	No
Quantity * Length * Width	Yes	Yes	No
Quantity * Length * Width * Height	Yes	Yes	Yes

This the number of price units purchased. For example, if you purchased 6 meters of material, every meter weighs 10 kilo, and the price unit (Calculation unit field) is 'Kg', this field shows a quantity of 60.

This is total sum of the current purchase invoice line. This field is automatically filled in based on the values of the Quantity, Price, Discount percentage, and Discount fields.

The sum is exclusive of VAT.

The VAT sum is calculated based on the total sum specified on the purchase invoice line and the VAT code entered on the line.

This is the sum (excluding VAT) already invoiced for the specified purchase order line. The field is filled automatically if a purchase invoice line has been created and processed for the specified purchase order line.

This is the total of the sum already invoiced for this purchase order line and the total sum of the current purchase invoice line. The sum is exclusive of VAT.

This field shows the number of pieces ordered on the purchase order line.

The Received field shows the number of pieces received on this purchase order line.

The Complete check box is selected when the receipt of goods has been confirmed as complete, which means that no more goods are expected for the purchase order line.

Note: When this check box is selected, it does not mean that the quantity received is equal to the quantity ordered. It only indicates that no more items will be received for this purchase order line.

The Invoiced field shows the number of pieces invoiced for this purchase order line. The Complete check box is selected when the purchase invoice line has been processed, indicating that it was the last invoice line ('Invoice line authorized; last invoice').

This is the number of units invoiced, expressed in the unit on which your purchase price of the part is based. For example, if you define a purchase price per kilo for a piece part, this field shows the number of kilos already invoiced.

This is the price per unit as specified on the purchase order.

This is total sum from the original purchase order line. The sum is exclusive of VAT.