InvenTree/docs/docs/manufacturing/build.md

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Build Orders

Build Orders

A Build Order is used to create new stock by assembling component parts, according to a Bill of Materials (BOM).

A BOM can be specified for any Part which is designated as an Assembly. The BOM consists of other Parts which are designated as Components.

A Build Order uses the BOM to allocate stock items to the assembly process. As the Build Order is completed, the required stock quantities are subtracted from allocated stock items.

View Build Orders

To navigate to the Build Order display, select Manufacturing from the main navigation menu, and Build Orders from the sidebar.

The Build Order Index Page allows the user to view all build orders:

{{ image("build/build_display.png", title="Build Orders") }}

The following view modes are available:

Table View

Table View provides a table of Build Orders, which can be filtered to only show the orders you are interested in.

{{ image("build/build_list.png", title="Build List") }}

Calendar View

Calendar View shows a calendar display with outstanding build orders, based on the various dates specified for each order.

{{ image("build/build_calendar.png", title="Build Calendar") }}

The build calendar allows the user to navigate month-by-month and display the filtered build orders

Build Order Details

Select an individual build order from the build order table to navigate to the Build Order detail page. The build order detail page provides a comprehensive overview of the build order, including all relevant information and actions.

Build Order Reference

Each Build Order is uniquely identified by its Reference field. Read more about reference fields.

Build Parameters

The following parameters are available for each Build Order, and can be edited by the user:

Parameter	Description
Reference	Build Order reference e.g. '001'
Description	Description of the Build Order
Part	Link to the Part which will be created from the Build Order
Quantity	Number of stock items which will be created from this build
Sales Order	Link to a Sales Order to which the build outputs will be allocated
Source Location	Stock location to source stock items from (blank = all locations)
Destination Location	Stock location where the build outputs will be located
Start Date	The scheduled start date for the build
Target Date	Target date for build completion
Responsible	User (or group of users) who is responsible for the build
External Link	Link to external webpage
Notes	Build notes, supports markdown

Build Output

A Build Output creates a new stock instance of the assembly part, of a specified quantity. Each Build Order requires at least one build output. Multiple build outputs can be specified if the build is completed in batches.

Read more about build outputs here.

Build Status

Each Build Order has an associated Status flag, which indicates the state of the build:

Status	Description
Pending	Build order has been created, but is not yet in production
Production	Build order is currently in production
On Hold	Build order has been placed on hold, but is still active
Cancelled	Build order has been cancelled
Completed	Build order has been completed

Source Code

Refer to the source code for the Build Order status codes:

::: build.status_codes.BuildStatus options: show_bases: False show_root_heading: False show_root_toc_entry: False show_source: True members: []

Stock Allocations

When a Build Order is created, we then have the ability to allocate stock items against that build order. The particular parts we need to allocate against the build are specified by the BOM for the part we are assembling.

• A Stock Allocation links a certain quantity of a given Stock Item to the build.
• At least one stock allocation is required for each line in the BOM
• Multiple stock allocations can be made against a BOM line if a particular stock item does not have sufficient quantity for the build

!!! info "Example - Stock Allocation" Let's say that to assembly a single "Widget", we require 2 "flanges". So, to complete a build of 10 "Widgets", 20 "flanges" will be required. We allocate 20 flanged against this build order.

Allocating stock to a build does not actually subtract the stock from the database. Allocations signal an intent to take that stock for the purpose of this build. Stock allocations are subtracted from stock at the completion of a build.

!!! info "Part Allocation Information" Any part which has stock allocated to a build order will indicate this on the part information page.

For further information, refer to the stock allocation documentation.

Build Order Display

The detail view for a single build order provides multiple display panels, as follows:

Build Details

The Build Details panel provides an overview of the Build Order:

{{ image ("build/build_panel_details.png", title="Build Details") }}

Required Parts

The Required Parts panel displays all the line items (as defined by the bill of materials) required to complete the build order.

{{ image("build/build_panel_line_items.png", title="Line Items") }}

The allocation table (as shown above) provides an interface to allocate required stock, and also shows the stock allocation progress for each line item in the build.

Allocated Stock

The Allocated Stock tab displays all stock items which have been allocated to this build order. These stock items are reserved for this build, and will be consumed when the build is completed:

{{ image("build/allocated_stock_table.png", title="Allocated Stock Table") }}

!!! info "No BOM" If the part being built does not have a BOM, then the Allocated Stock tab will not be displayed.

Consumed Stock

The Consumed Stock tab displays all stock items which have been consumed by this build order. These stock items remain in the database after the build order has been completed, but are no longer available for use.

• Tracked stock items are consumed by specific build outputs
• Untracked stock items are consumed by the build order

!!! info "No BOM" If the part being built does not have a BOM, then the Consumed Stock tab will not be displayed.

Return to Stock

After stock items have been consumed by a build order, it may be required to recover some of that stock back into the inventory. This can be done by selecting the desired items, and pressing the Return to Stock button:

{{ image("build/build_return_stock.png", title="Return Stock") }}

This will open the following dialog, which allows the user to specify the quantity of stock to return, and the location where the stock should be returned:

{{ image("build/build_return_stock_dialog.png", title="Return Stock Dialog") }}

Incomplete Outputs

The Incomplete Outputs panel shows the list of in-progress build outputs (created stock items) associated with this build.

{{ image("build/build_outputs.png", title="Build Outputs") }}

!!! info "Example: Build Outputs" In the example image above, a single output (serial number 2) has been completed, while serial numbers 1 and 4 are still in progress.

• Build outputs can be created from this screen, by selecting the Create New Output button
• Outputs which are "in progress" can be completed or cancelled
• Completed outputs (which are simply stock items) can be viewed in the stock table at the bottom of the screen

Completed Outputs

This panel displays all the completed build outputs (stock items) which have been created by this build order:

Child Builds

If there exist any build orders which are children of the selected build order, they are displayed in the Child Builds tab:

{{ image("build/build_childs.png", title="Child Builds") }}

Test Results

For trackable parts, test results can be recorded against each build output. These results are displayed in the Test Results panel:

{{ image("build/build_panel_test_results.png", title="Test Results") }}

This table provides a summary of the test results for each build output, and allows test results to be quickly added for each build output.

Attachments

Files attachments can be uploaded against the build order, and displayed in the Attachments tab:

{{ image("build/build_attachments.png", title="Attachments") }}

Notes

Build order notes (which support markdown formatting) are displayed in the Notes tab:

{{ image("build/build_notes.png", title="Notes") }}

External Build Orders

InvenTree supports the creation of external build orders, which are used to manage the manufacturing of parts by an external supplier. Read more about external build orders.

Create Build Order

To create a build order for your part, you have two options:

Part Detail Page

• Navigate to the detail page for the assembly part you wish to create
• Select the Build Orders tab
• Select Start new Build

{{ image("build/build_create_from_part.png", title="Create Build Order from Part") }}

Build Order Page

• Navigate to the Build Order overview page
• Click on New Build Order

Fill-out the form as required, then click the "Submit" button to create the build.

Create Child Builds

When creating a new build order, you have the option to automatically generate build orders for any subassembly parts. This can be useful to create a complete tree of build orders for a complex assembly. However, it must be noted that any build orders created for subassemblies will use the default BOM quantity for that part. Any child build orders created in this manner must be manually reviewed, to ensure that the correct quantity is being built as per your production requirements.

Complete Build Order

To complete a build, click on {{ icon("tools") }} icon on the build detail page, the Complete Build form will be displayed.

The form will validate the build order is ready to be completed, and will prevent you from continuing if any of the below conditions are present unless you select one of the presented options to override the validation and accept completion of the build anyway.

!!! info "Incomplete Build" If the warning message Required build quantity has not been completed is shown, you have build outputs that have not yet been completed.

In the unlikely event that you wish to proceed despite this, you can toggle the `Accept Incomplete` option to true to override the error and allow completion without the required number of build outputs.

!!! info "Incomplete Allocation" If the warning message Require stock has not been fully allocated is shown, make sure to allocate stock matching all BOM items to the build before proceeding with build completion.

If you wish to complete the build despite the missing parts, toggle the `Accept Unallocated` option to true to override the warning and allow completion with unallocated parts.

!!! info "Overallocated Stock Items" If the warning message Some stock items have been overallocated is shown, you have more stock than required by the BOM for the part being built allocated to the build order. By default the Not permitted option is selected and you will need to return to the allocation screen and remove the extra items before the build can be completed.

Alternatively, you can select `Accept as consumed by this build order` to continue with the allocation and remove the extra items from stock (e.g. if they were destroyed during build), or select `Deallocate before completing this build order` if you would like the extra items to be returned to stock for use in future builds.

Select a Location to store the resulting parts from the build then click on the confirmation switch. Finally, click on the "Complete Build" button to process the build completion.

!!! warning "Completed Build" A completed build cannot be re-opened. Make sure to use the confirm only if you are certain that the build is complete.

Cancel Build Order

To cancel a build, click on {{ icon("circle-x", color="red") }} icon on the build detail page.

The Cancel Build form will be displayed, click on the confirmation switch then click on the "Cancel Build" button to process the build cancellation.

!!! warning "Cancelled Build" A cancelled build cannot be re-opened. Make sure to use the cancel option only if you are certain that the build won't be processed.

Build Scheduling

Build orders can be scheduled for a future date, to allow for planning of production schedules.

Start Date

Build orders can be optionally scheduled to start at a specified date, by setting the Start Date field. This field can be left blank if the build is to start immediately.

Target Date

Build orders can be optionally scheduled to be completed by a certain date, by setting the Target Date field. This field can be left blank if the build has no specific deadline.

Overdue Builds

If the Target Date is reached but the build order remains incomplete, then the build is considered overdue.

This can be useful for tracking production delays, and can be used to generate reports on build order performance.

Build Order Settings

The following global settings are available for adjusting the behavior of build orders:

Name	Description	Default	Units
{{ globalsetting("BUILDORDER_REFERENCE_PATTERN") }}
{{ globalsetting("BUILDORDER_EXTERNAL_BUILDS") }}
{{ globalsetting("BUILDORDER_REQUIRE_RESPONSIBLE") }}
{{ globalsetting("BUILDORDER_REQUIRE_ACTIVE_PART") }}
{{ globalsetting("BUILDORDER_REQUIRE_LOCKED_PART") }}
{{ globalsetting("BUILDORDER_REQUIRE_VALID_BOM") }}
{{ globalsetting("BUILDORDER_REQUIRE_CLOSED_CHILDS") }}
{{ globalsetting("PREVENT_BUILD_COMPLETION_HAVING_INCOMPLETED_TESTS") }}