Release an Assembly Kit with an Explicit Shortage Decision

A kit can be almost complete and still be unusable for the planned assembly sequence. Conversely, one missing item may affect only a later operation. The release decision should describe the actual missing material and its effect on the build, rather than relying on a single percentage-complete figure.

Map the shortage to the approved BOM

For each missing item, record the exact approved part number, required quantity, available quantity and affected reference designators. Include the intended assembly variant. A part that is intentionally not fitted on one variant is not a shortage for that variant, even if the common design includes its footprint.

State how availability was confirmed and when it was checked. Material physically accepted at the assembly location is different from a distributor estimate or a parcel still in transit. Keep those states separate when deciding whether an operation can start.

Identify the blocked operation

Ask the assembler which operation needs the part and what happens if it is fitted later. The review may involve placement, soldering access, cleaning, inspection, programming, test or enclosure assembly. Late installation can require repeating earlier work; it should not be assumed equivalent to the normal sequence.

For a connector shortage, for example, distinguish a board that can be assembled and held before connector installation from a board whose approved test fixture requires that connector. A partially assembled board may be useful work in progress without being a testable or shippable unit.

Write a limited release instruction

Identify the quantity allowed to proceed, the operations permitted, the stop point and the person responsible for releasing the hold. Include the board and BOM revisions. “Proceed where possible” leaves too much room for different interpretations across shifts or production locations.

Keep held units identifiable and separate from accepted finished goods. If only some units receive the missing part, record which units they are. A shared batch label can become misleading when the batch contains several completion states.

Approve the recovery sequence

When material arrives, confirm its identity before removing the hold. Review the installation and reinspection steps needed for the actual condition of the waiting assemblies. Include any tests that were previously impossible or must be repeated after the additional work.

Close the shortage record with quantities completed, remaining holds and any approved deviations. Feed the result into the next kit plan. The purpose is to preserve a clear build sequence and acceptance decision, not merely to make an incomplete kit appear ready on a schedule.