Split and merge manufacturing orders

In Odoo Manufacturing, it is possible to create manufacturing orders (MOs) for a single unit of an item, or multiple units of the same item. A partially produced manufacturing order may be split to account for both completed units and remaining production requirements. This process ensures that the current MO reflects only the quantity actually finished, while supplementary MOs track the balance.

An MO should be split if the remaining quantity cannot be completed immediately due to internal or external constraints.

When a split is executed, the system updates the original MO to reflect the specific quantity that has been produced and is ready for closing. Then, new MOs are automatically generated for the difference between the original planned quantity and the actual produced quantity. This ensures that lead times, labor costs, and material consumption remain accurately allocated to the specific time frame in which the work occurred.

Splits can be set up from the MO form or the Manufacturing Orders page.

Important

An MO can only contain one unit of a product, or multiple units of a single product that all use the same bill of materials (BoM). As a result, it is only possible to merge MOs for the same products with the same BoM.

Split manufacturing orders

MOs can be split in two ways:

From the Manufacturing Orders page

Navigate to Manufacturing app ‣ Operations ‣ Manufacturing Orders.

Select the checkbox next to the MO to be split. Click Actions ‣ Split. A Split production pop-up window appears.

In the Max Batch Size field, enter the number of units that each batch should be split into, then click outside of the field. The # Splits field updates with the total number of MOs that will be created. A table appears below, with a line for each new MO that will be created by the split. In the Quantity To Produce column, enter the number of units that will be assigned to each new MO. Finally, click Split to split the MO.

Example

A work order for 5 units of the Drawer product are split with a Max Batch Size of 2. This creates 3 splits; two of the splits contain 2 units each, and the final split contains a single unit.

The Split production pop-up window for a manufacturing order.

After clicking Split, the original MO is split into the number of orders that was specified in the # Split field. The reference numbers for the new MOs are the reference number for the original order with -### tags added to the end.

Example

MO WH/MO/00012 is split into three separate orders. The reference numbers for the new orders are:

  • WH/MO/00012-001

  • WH/MO/00012-002

  • WH/MO/00012-003

From the actions menu of an MO

To split an MO into multiple orders, begin by navigating to Manufacturing app ‣ Operations ‣ Manufacturing Orders, then select a confirmed MO. At the top of the page, next to the New button, the MO’s reference number appears with a (Actions) icon next to it.

Click the (Actions) icon to reveal the drop-down menu for the MO, then select Split.

The Actions menu on a manufacturing order.

After selecting Split, a Split production pop-up window appears. In the Max Batch Size field, enter the number of units that each batch should be split into, then click outside of the field. The # Splits field updates with the total number of MOs that will be created. A table appears below, with a line for each new MO that will be created by the split. In the Quantity To Produce column, enter the number of units that will be assigned to each new MO. Finally, click Split to split the MO.

After clicking Split, the original MO is split into the number of orders that was specified in the # Split field. The reference numbers for the new MOs are the reference number for the original order with -### tags added to the end.

To complete the MOs, complete all work orders, then click the Produce All button on the MO form.

Merge manufacturing orders

To merge two or more MOs using the same BoM into a single order, begin by navigating to Manufacturing app ‣ Operations ‣ Manufacturing Orders. Select the MOs that will be merged by selecting the checkbox to the side of the name of each order.

Select at least two orders using the same BoM to merge.

Once all MOs have been selected, click Actions ‣ Merge.

The selected MOs are merged into a single order. The reference number for the new MO is the next sequential number that has not already been assigned to an order.

Example

The last reference number used for an MO was WH/MO/00012. Two MOs, WH/MO/00008 and WH/MO/00009, are merged into a single order. The reference number for the MO created by the merger is WH/MO/00013.