OEM-TIER-TIER2-FLOW

OEM Tier1 Tier2 flow automotive industry EDI/communication standard.

Definition

OEM Tier1 Tier2 flow refers to the cascading EDI architecture in automotive supply chain where OEM (Original Equipment Manufacturer, e.g., VW + Ford + Toyota) sends DELFOR + DELJIT to Tier1 (e.g., Bosch + Continental + Denso), which in turn sends DELFOR to Tier2 (e.g., raw materials + sub-components suppliers), sometimes Tier3 + Tier4 etc., each coordinating production + sequenced delivery per OEM schedules, typical example of ~5-7 cascading tiers in modern auto manufacturing (50000+ components + 1000+ suppliers per vehicle). Complete profile details technical infrastructure + scope OEM + Tier1 + Tier2 supplier chain industry integration EDI flows (DELFOR delivery forecast + DELJIT just-in-time call-off + DESADV despatch advice + INVOIC invoice + RECADV receipt advice + ORDERS order + ORDRSP order response). Rapid adoption since 1990s by majority OEMs + Tier suppliers automotive industry global chain digital transformation + JIT/JIS just-in-time/sequence + Industry 4.0 + electrification supply chain reorganization 2020s+.

Origin

Automotive Tier1/2/3 supplier chain architecture evolved 1980s+ ; ~50000+ components per modern vehicle 1000+ suppliers chain ~5-7 tiers cascading.

Example in context

VW Wolfsburg assembly plant production schedule cascades: VW sends weekly DELFOR + daily DELJIT to Tier1 Bosch (ECUs) ; Bosch internal MRP generates Tier2 DELFOR to semiconductor supplier Infineon + capacitor supplier Murata + multiple Tier2 ; Tier2 cascades own Tier3 DELFOR to raw silicon wafer suppliers + multiple materials Tier3+ ; full cascading chain delivers components just-in-time to VW assembly line.

Related terms

• Tier1 OEM DELFOR — direct cascade.