Measurement (Aufmaß)

5.9.1 Purpose

Measurement is stage 2 of the invoice workflow. Its purpose is to verify the quantities claimed on the invoice against the quantities actually measured and accepted on site. The measured values produced here are what feed the Measured figures used in Cost tracking and on the project Overview.

Note: Earlier documentation states that measurement begins once an invoice has been finalised. In the current build the invoice is still a draft when it enters measurement, and finalisation is stage 4. Do not carry the earlier sequencing across.

5.9.2 Opening the measurement

Select Measurement from an invoice draft. The measurement screen opens with the workflow stepper at the top, the invoice details and measurement details on the left, and the position list on the right.

Figure 45 - The Measurement stage

Header controls are Back to invoice, Save, and Supplier info, which advances to the next stage.

5.9.3 Measurement details

The left panel repeats the invoice details as read-only reference information: invoice number, invoice date, billing period, reference (the AZ number), invoice arrival date, and cash discount date. Beneath these, the measurement itself is identified.

Field	Mandatory	Notes
Name	Yes	Title for the measurement, defaulting to the invoice name.
Number	Yes	Measurement number, defaulting to the invoice number.
Date	Yes	Date the measurement was created.
Status	Read-only	Shows DRAFT until the measurement is completed.

5.9.4 The position list

The summary bar above the list shows the number of mismatches, the cumulative invoiced value, the cumulative measured value, and the difference between them. A banner states how many positions still require measurement detail before the invoice can advance; Show positions filters the list to those.

Column	Content
Check	Indicator showing whether the position has been measured and whether it matches the invoice.
Position	OZ, description, unit, and unit price.
Invoice vs measured	Invoiced quantity, measured quantity, the difference between them, the contracted LV quantity, and a progress bar. Positions not yet measured are marked accordingly.
Measured	Editable quantity field, labelled New cumulative. A link is offered to adopt the invoiced quantity directly.
Amount	Value of the measured quantity, calculated as quantity multiplied by unit price.
Comment	Free text. Comments carried from the invoice are marked From invoice.

Figure 46 - A position awaiting measurement

Note: The measured quantity field carries the same New cumulative label as the invoice quantity field, and the row additionally shows the delta for this invoice separately from the cumulative figure. This is consistent with cumulative entry across both stages, but it must still be confirmed with the development team - see the critical item in Appendix A.

5.9.5 Recording measurement detail

A position can be expanded to record how the measured quantity was arrived at. Measurement detail is organised into groups, each containing one or more lines.

Figure 47 - Measurement groups and lines beneath a position

Element	Purpose
Measurement group	A named grouping of measurement lines, with its own total. Added using Add measurement group.
Line	A single measurement entry within a group. Added using Add line.
Text	Description of what the line measures.
Calculation formula	Arithmetic expression producing the quantity. Numbers and the operators +, −, , and / may be used, for example 122.5.
Calculated quantity	Read-only result of the formula.
Measurement document qty	Quantity recorded on the measurement document.

Note: The formula field is what makes this a genuine Aufmaß rather than a plain quantity entry: the arithmetic behind a measured quantity is retained and auditable rather than being calculated outside the system.

5.9.6 Completing the measurement

Enter or adopt a measured quantity for every position that requires one.
Add measurement groups and lines where the quantity needs to be substantiated.
Add comments where the measured quantity differs from the invoiced quantity.
Select Save.
Select Supplier info to advance to the payment calculation.

Note: Where a measured quantity differs from the invoiced quantity, the position is flagged as a mismatch and the difference is shown in the summary bar. Mismatches do not block progress, but they carry through to the payment calculation as corrections - see section 5.10.5.