* Begin of the insertionadd **feature flag** "calculatedEnd of the insertion Begin of the deletion A calculatedEnd of the deletion value Begin of the deletion is added as a newEnd of the deletion project Begin of the insertionattribute"End of the insertion Begin of the deletion attributeEnd of the deletion

* Begin of the insertionadd project attribute type "calculated value" inEnd of the insertion Begin of the deletion A calculated value has these details:

* Name

* Formula

* For all projects

* The formulas can includeEnd of the deletion the Begin of the insertionprojectEnd of the insertion Begin of the deletion followingEnd of the deletion attributes Begin of the insertionadministrationEnd of the insertion Begin of the deletion from that project:End of the deletion

* Begin of the insertionif possible, use PrimerEnd of the insertion Begin of the deletion IntegerEnd of the deletion

* Begin of the insertionis only visible when the feature flag is setEnd of the insertion Begin of the deletion FloatEnd of the deletion

* Begin of the insertionnameEnd of the insertion Begin of the deletion Mathematical operators: +, -, \*, /, ( and )End of the deletion

* Begin of the insertionformula

End of the insertion Begin of the deletion Other calculated values

End of the deletion * Begin of the insertionfor now,End of the insertion Begin of the deletion **Order of operations:** Automatic application ofEnd of the deletion the Begin of the insertionformula is a string field that offers no helpEnd of the insertion Begin of the deletion mathematical rule where multiplication and division are performed before addition and subtraction, unless parentheses dictate otherwise

* Additionally, constants (floatEnd of the deletion or Begin of the insertiondropdown when editing

End of the insertion Begin of the deletion integer numbers) can be added

End of the deletion * Begin of the insertiononly constants are allowedEnd of the insertion Begin of the deletion In order to trigger the selection of the attributes in the field, the user can use the command "/"End of the deletion as Begin of the insertioninput for now

End of the insertion Begin of the deletion implemented in the Automatically generated subjects.

End of the deletion * Begin of the insertionexample formula: `1 + (2End of the insertion Begin of the deletion The command triggers a dropdown to open with sections for:

End of the deletion * Begin of the insertion3)`End of the insertion Begin of the deletion Mathematical operatorsEnd of the deletion

* Begin of the insertionthe formula is validated and errors are displayed when an invalid formula is insertedEnd of the insertion Begin of the deletion Calculated valuesEnd of the deletion

* Begin of the deletion The calculated value should be stored inEnd of the deletion the Begin of the insertionnew attribute canEnd of the insertion Begin of the deletion database. When displaying the value, it should not have toEnd of the deletion be Begin of the insertionaddedEnd of the insertion Begin of the deletion calculated on the fly.

* Reasons:

* Lots of read access from multiple places.

* DifficultyEnd of the deletion to Begin of the deletion calculateEnd of the deletion a Begin of the insertionproject

End of the insertion Begin of the deletion calculated value if it in turn includes a calculated value again.

End of the deletion * Begin of the insertionno calculationEnd of the insertion Begin of the deletion Note that the value stored in the database has to be recalculated under certain circumstances: <mention class="mention" data-id="64352" data-type="work_package" data-text="###64352">###64352</mention>

* Error handling

* In calculations, thereEnd of the deletion is Begin of the insertionperformedEnd of the insertion Begin of the deletion error handlingEnd of the deletion for Begin of the insertionnow. Administrators can enterEnd of the insertion Begin of the deletion **circular references**.

* In case the user includes text that is **not an integer orEnd of the deletion a Begin of the insertionformula, but itEnd of the insertion Begin of the deletion float,** the fieldEnd of the deletion will Begin of the insertionnot do anything.


End of the insertion Begin of the deletion display an inline error: &quot;Only numeric values, project factors, calculated values and mathematical operators are allowed&quot;

* In case the mathematical operation fails (e.g. because of a **division by zero error**), the field will display an inline error.


End of the deletion **Out of scope**

Begin of the deletion * List factors (Project attribute of type list with values)

End of the deletion * Displaying the calculated value (e.g. on the project overview or the project list)