Just-In-Sequence (JIS) means the delivery of the right products, in the right quantity, at the right time, to the right place and also in the right order (sequence), so that they can be processed directly in production. Just-In-Sequence logistics thus represents an extension of Just-In-Time, because delivery in the correct sequence is added as a further variable.
Especially in the automotive industry, JIS has developed as procurement logistics without stocks. In the Automotive sector, sequence-synchronous delivery to production represents an important part of the logistics chain. This is because vehicles are often configured individually and thus vary greatly with regard to the required components and assemblies – which is why delivery is tailored to the vehicle and the sequence of assembly accordingly. The supplier must therefore make sure that the parts are packed in the correct sequence already during loading, so that the parts to be delivered can be unloaded at the customer in the processing sequence.
Just-In-Sequence (JIS) sequence
The car manufacturer plans the final assembly and thus determines the sequence for the JIS delivery. This information is passed on to the supplier electronically via an interface. The supplier can then plan his production and also the JIS-compliant loading and delivery. The parts then reach the assembly lines on delivery in exactly the order in which they have to be installed. Pre-sorting is not necessary. This enables the parts to be placed on automatic transport systems, which provide the parts in the production area with a perfect fit.
Just-in-sequence is less suitable for parts with a long lead time and thus a long delivery time, because a delivery bottleneck can then quickly jeopardize the entire production.
Just-In-Sequence (JIS) requires a comprehensive flow of information
The JIS process requires the exchange of information between recipient and supplier. On the one hand about the planned production or final assembly and on the other hand about the sequence of parts to be delivered. For this purpose, appropriate IT systems are generally used, which exchange data via an appropriate interface and data protocol such as EDIFACT or VDA in the automotive environment. The logistics software of the supplier and the recipient must be able to map both the JIS process and the VDA standards in the automotive industry.