The calculation lines are numbered automatically. If Isah is linked to engineering software, the position number is used to indicate the position (balloon) on the drawing.

The part type indicates the type of part:

• Purchase part
• Production part
• Costs
• Service
• Functional BOM

The Revision number field shows the revision of the part specified on the selected line. If revisions are not used in your company, this field is always set to revision number '000'. Initially, this field contains the revision that is valid on the date the line was added.

• If your company uses revisions by revision number (see the Basic data form, Revision management tab), you can select a different revision in the Revision number field. If you manually change the Part revision field, the Reference date field will be filled with the date on which the selected part revision becomes valid.
• If your company uses revisions by reference date (see the Basic data form, Revision management tab), you can enter another date in the Reference date field. The Reference date field is initially filled with the current date. If you enter a different date in this field, the part revisions will be checked to see which revision is valid on the reference date entered. This revision will then be filled in automatically in the Revision number field.

Use this field to specify how the part is to be obtained, or in other words, the origin of the part. Initially, the order code of the part determines the origin type. For example, the order code 'Purchase to order' is translated into the origin type 'Distributed origins', and the quantity is then entered in the Purchase field.

You can modify the origin type:

Copy calculation and delete part:	To include the production order of the semi-finished product in the production order of the production part for which it is required, choose 'Copy calculation and delete part'. The calculations relating to the production part and the semi-finished product will then be reduced to one level and therefore to one production order. Also the reference to the semi-finished product is removed from this calculation, as the part number of the semi-finished product is replaced by all elements of which the semi-finished product is composed.
Copy calculation and do not delete part (phantom):	This setting has virtually the same effect as the 'Copy calculation and delete part' setting, where the calculations for the semi-finished product and the finished product of which it is a component are reduced to one level. However, this 'total calculation' no longer allows you to see which parts, operations, etcetera belong to the semi-finished product, and which belong to the finished product. To merge the underlying calculations into one calculation, while still being able to see the product the parts, operations, equipment and external operations belong to, choose 'Copy calculation and do not delete part (phantom)'. The calculation will then include a phantom line which shows the semi-finished product the underlying calculation components are intended for. All part lines, operation lines, equipment lines, and external operation lines referring to the semi-finished product will contain a reference to the phantom line.
From customer:	Use this setting to indicate that the part is supplied by the customer (who has ordered the finished product in which it will be included).
Distributed origins:	If you choose this option, use the Stock, Purchase, and Production fields in the Distributed origins section to specify the origins of the part and the quantities obtained from those origins.

Example

If the finished product of the production file is a cabinet, the cabinet shelves may be a component of the calculation. The origin type will then indicate the origin of these shelves:

• They may be produced by you as part of the current production file (they are sawn to size).
• They may be supplied by the customer.
• In case of distributed origins, the shelves may be taken from stock, originate from production in another production file, or purchased from another party. Also a combination of these options is possible.

If the part line contains a semi-finished product, you can copy the calculation of the semi-finished product to the line (phantom). Once you have done so, the Copied check box will be selected. If you cancel the calculation lines, this check box will be deselected.

The field can also be changed manually, but only if the order code is 'Copy calculation and do not delete part (phantom)'.

This is the number of pieces of the part you need in order to make the finished product.

Note: When building the calculation, you should take into account the quantity that needs to be created for the production file (see the Quantity field on the General tab of the production file). For example, if the quantity ordered is '10 pieces', fill in the quantity required to produce ten parts.

Specify the length, width, and/or height per piece. Whether or not you can fill in one or more of these fields depends on the setting of the Unit code field on the General tab of the Parts form:

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

The number in this field is calculated automatically by multiplying the quantity, the length, the width, and the height. The value of this informational field cannot be modified directly.

Note: If the Show costs including waste check box was selected from the Settings menu, the value in this field is including any waste. If the check box is not selected, the waste will not be taken into account.

The weight and surface of the parts can be displayed only if a weight/surface has been specified for the part on the General tab in the Parts module.

Note: If the Show costs including waste check box was selected from the Settings menu, the values in these fields are including any waste. If the check box is not selected, the waste will not be taken into account.

These fields are informational fields that could be used, for example, by the planner. The planner could use them to register the exact quantities and sizes as specified on the drawing.

This is the waste percentage taken into consideration in the calculation. The waste percentage is taken into account in the calculation of the quantity, the weight, and the surface (General tab), and in the variable costs.