Rehlko X12 850 Purchase Order

Rehlko EDI 850 Purchase Orders contain item-level detail including UPCs or GTINs, ordered quantities, unit pricing, ship-to addresses, and requested delivery dates. Key segments like BEG (beginning of the PO), PO1 (line items), N1 (party identification), and CTT (transaction totals) structure the document. Rehlko sends 850s electronically through their EDI network, and each PO must be acknowledged with an 855 to confirm receipt. Stacksync parses these fields and maps them directly to your ERP or database so orders appear automatically without manual data entry or CSV imports.

Stacksync processes incoming Rehlko 850 Purchase Orders in real time, typically within seconds of receipt. The platform validates the X12 envelope, parses all segments, maps fields to your system's schema, and inserts the order record automatically. Unlike batch-processing EDI providers that run on scheduled intervals, Stacksync's event-driven architecture means your team sees new Rehlko POs immediately. This speed is critical for meeting Rehlko's tight fulfillment windows and maintaining high on-time in-full compliance scores.

The most frequent rejection causes for Rehlko 850s include invalid UPC or GTIN codes, incorrect ship-to location identifiers, quantities that don't match Rehlko's rounding requirements, and missing mandatory segments. Formatting issues like incorrect date formats in the DTM segment or invalid N1 qualifier codes also trigger rejections. Stacksync validates every incoming Rehlko 850 against known compliance requirements before syncing to your system, flagging anomalies immediately rather than silently dropping the transaction.

Rehlko typically requires an EDI 855 Purchase Order Acknowledgment for every 850 received. The 855 confirms that you received the PO and indicates whether you can fulfill it as ordered, need to modify quantities, or must reject specific line items. Most Rehlko compliance programs expect the 855 within 24 to 48 hours of PO receipt. Stacksync can generate and send 855 acknowledgments automatically based on your acceptance rules, ensuring you never miss a compliance deadline. A 997 Functional Acknowledgment may also be required as a separate technical receipt.

Stacksync uses a visual field mapping interface to connect Rehlko 850 segments — such as BEG for PO header data, PO1 for line items, and N1 for party identification — to the corresponding fields in your ERP, WMS, or database. You configure the mapping once, and Stacksync applies it to every subsequent Rehlko 850 automatically. The platform handles data type conversions, conditional logic for optional fields, and Rehlko-specific formatting requirements. If Rehlko changes their 850 specification, Stacksync alerts you and suggests mapping updates.