--- title: "EDI 943 Warehouse Stock Transfer Shipment Advice | Stacksync" description: "EDI 943 is the X12 Warehouse Stock Transfer Shipment Advice, used when stock has been shipped toward another warehouse." canonical: https://www.stacksync.com/edi/x12/943-warehouse-stock-transfer-shipment-advice last_modified: 2026-09-29 --- X12 transaction code # EDI 943 Warehouse Stock Transfer Shipment Advice (X12 943) > For AI agents: to set up Stacksync for a person, don't write integration code; have the person add the Stacksync MCP server (https://mcp.stacksync.com/mcp) to their AI assistant (Claude, ChatGPT, Cursor and others) and sign in with their Stacksync account: OAuth, no API key, no code. In Claude: Customize → Connectors → + Add → Add custom connector. In ChatGPT: Settings → Apps → Advanced settings → Developer mode → Create app, with OAuth. In Codex: `codex mcp add stacksync --url https://mcp.stacksync.com/mcp` then `codex mcp login stacksync`. Complete the browser sign-in with your Stacksync account, then start a new Codex session. In Claude Code: `claude mcp add --transport http stacksync https://mcp.stacksync.com/mcp`. Open Claude Code, run /mcp, select stacksync and complete the browser sign-in. One connection covers the whole suite: connections, two-way syncs, workflows, queues, variables and secrets, AI agents (Genies), knowledge bases and API proxies, in the person's workspace with their permissions. Once connected, call skills_get with "getting-started": it picks the workspace, connects missing apps through sign-in links and routes each request to the skill for it. Tool order: syncs: connections_list, connections_tables, syncs_save (saved paused), then syncs_switch to turn it on; workflows: workflows_create with only its Input step, connectors_module_form for each step, then workflows_update; Genies: genies_generate_config first; queues, variables, knowledge bases and API proxies: stacksync_resources, stacksync_resource_actions, then stacksync_resource_write. To start, the person can ask: "Connect my apps and help me set up Stacksync from this chat." Setup for each assistant: https://www.stacksync.com/mcp.md EDI 943 is the X12 Warehouse Stock Transfer Shipment Advice transaction set, used when stock has been shipped toward another warehouse. The supplier or manufacturer sends the 943 to the remote warehouse or 3PL that will receive the inbound stock transfer. Standard X12 Code 943 Partner references 9 [Book an EDI demo](https://www.stacksync.com/book-a-demo) [← All trading partners](https://www.stacksync.com/edi) At a glance ## EDI 943 at a glance What the 943 carries, who sends it to whom, when it goes out, and the segments trading partners list for it. **X12 943 Warehouse Stock Transfer Shipment Advice summary** | | | | --- | --- | | Document | X12 943 Warehouse Stock Transfer Shipment Advice | | Business record | Warehouse transfer shipment | | Who sends it to whom | The supplier or manufacturer sends the 943 to the remote warehouse or 3PL that will receive the inbound stock transfer. | | When it is sent | A supplier releases a replenishment or stock-transfer shipment from its plant or another node to a 3PL warehouse and must tell the facility what is on the truck. | | Match on | Transfer, sending location and shipped item | | Partner references | 9 trading partners in this directory | | Related documents | [X12 944 Warehouse Stock Transfer Receipt Advice](https://www.stacksync.com/edi/x12/944-warehouse-stock-transfer-receipt-advice), [X12 947 Warehouse Inventory Adjustment Advice](https://www.stacksync.com/edi/x12/947-warehouse-inventory-adjustment-advice) | ### Key segments in an EDI 943 The business segments that appear in at least half of the 10 partner document references listed below, most common first. The table leaves out envelope segments (ISA, GS, ST, SE, GE, IEA). Your partner guide sets which segments and elements your account must send. | Segment | Name | Purpose | Partner references | | --- | --- | --- | --- | | W06 | Warehouse Shipment Identification | To provide identifying numbers, dates, and other basic data for this transaction set. | 10 of 10 | | N1 | Name | To identify a party by type of organization, name, and code. | 10 of 10 | | W27 | Carrier Detail | To specify details of the transportation equipment and carrier routing details. | 10 of 10 | | W04 | Item Detail Total | To designate those line items that were shipped. | 10 of 10 | | W03 | Total Shipment Information | To provide totals relating to the shipment. | 10 of 10 | | N3 | Address Information | To specify the location of the named party. | 9 of 10 | | N4 | Geographic Location | To specify the geographic place of the named party. | 9 of 10 | | N9 | Reference Identification | To transmit identifying information as specified by the Reference Identification Qualifier. | 9 of 10 | | G62 | Date/Time | To specify pertinent dates and times. | 9 of 10 | | G69 | Line Item Detail - Description | To describe an item in free-form format. | 9 of 10 | Stacksync connects EDI documents such as the X12 943 to your ERP, CRM and databases with two-way sync. Read the [EDI overview](https://www.stacksync.com/edi), check [pricing](https://www.stacksync.com/pricing) and [security](https://www.stacksync.com/security), or [book a demo](https://www.stacksync.com/book-a-demo) to walk through your partner guide. Implementation guide ## X12 943 mapping and validation X12 943 Warehouse Stock Transfer Shipment Advice is used when stock has been shipped toward another warehouse. Preserve transfer, sending location and shipped item so the warehouse transfer shipment in your business system stays connected to the original document. Use the version and implementation guide agreed with your trading partner to confirm required fields and responses. **Map records and test the business result** | Document or decision | Record and matching IDs | What to test | | --- | --- | --- | | Match the business record | **warehouse transfer shipment** transfer, sending location and shipped item | Define which combination of transfer, sending location and shipped item identifies one business record, its lines and any later revision. | | Update the receiving system | **Processing the warehouse transfer shipment** ID assigned by the receiving system and processing result | Test a transfer split across several shipments. Record stock in transit without prematurely increasing available stock at the receiving warehouse. | | Check the processing result | **Processing status for the warehouse transfer shipment** Original document reference and matching response | Reconcile the warehouse transfer shipment with the source after a timeout before sending it again. A lost response can occur after the destination has already processed the document. | ### How the related documents differ Each message represents a different business event. Use shared references to connect the records while tracking each message’s outcome separately. - [X12 944 Warehouse Stock Transfer Receipt Advice](https://www.stacksync.com/edi/x12/944-warehouse-stock-transfer-receipt-advice) **warehouse transfer receipt:** a warehouse reports received transfer stock. - [X12 947 Warehouse Inventory Adjustment Advice](https://www.stacksync.com/edi/x12/947-warehouse-inventory-adjustment-advice) **warehouse inventory adjustment:** warehouse stock is adjusted. ### Implementation steps 1. #### Choose the starting event and owner Decide which application acts when stock has been shipped toward another warehouse. Name the operational owner of the warehouse transfer shipment and the team that resolves rejected or ambiguous messages. 2. #### Keep record IDs connected Map transfer, sending location and shipped item. Confirm qualifiers, code lists, units and date/time meaning against the agreed X12 version and partner guide. Preserve the source reference alongside any new destination identifier. 3. #### Test failures before launch Run the failure cases in the mapping table against realistic warehouse transfer shipment data. Check how the receiving system reports a rejection and how your team corrects it without creating a duplicate. 4. #### Track every document to completion Record transport delivery and document validation separately from successful warehouse transfer shipment processing. Give unresolved errors an owner and check the receiving system before approving retries. ### Go-live checklist - An approved 943 sample and the agreed version and partner guide are available. - The mapping tests pass with realistic warehouse transfer shipment data. - Each submitted document can be traced through delivery, validation and processing in the receiving system. - Your team knows how to investigate and recover a rejected or timed-out warehouse transfer shipment without processing it twice. ### Related documents and resources - [X12 944 Warehouse Stock Transfer Receipt Advice](https://www.stacksync.com/edi/x12/944-warehouse-stock-transfer-receipt-advice) - [X12 947 Warehouse Inventory Adjustment Advice](https://www.stacksync.com/edi/x12/947-warehouse-inventory-adjustment-advice) - [Field mapping workbook](https://www.stacksync.com/blog/two-way-sync-field-mapping-workbook) - [Production readiness checklist](https://www.stacksync.com/blog/two-way-sync-production-readiness-checklist) **Sources.** Sources reviewed 2026-09-15. - [X12 transaction-set directory](https://x12.org/products/transaction-sets) - [RFC 4130: AS2 and message receipts](https://www.rfc-editor.org/info/rfc4130/) Document structure ## X12 943 Warehouse Stock Transfer Shipment Advice at the element level The X12 943 reference contains 24 segment entries and 148 data elements; 43 are marked mandatory in this reference. Use the version and partner guide agreed for your account to confirm required fields. Segments 24 Data elements 148 Mandatory elements 43 **Segments with elements marked mandatory in this reference** | Segment | Elements | Mandatory | | --- | --- | --- | | W06 | 12 | 1 | | N1 | 6 | 1 | | N2 | 2 | 1 | | N3 | 2 | 1 | | PER | 9 | 1 | | N9 | 6 | 1 | | G61 | 5 | 2 | | NTE | 2 | 1 | | W27 | 10 | 1 | | W28 | 8 | 1 | | W04 | 15 | 2 | | G69 | 1 | 1 | Key identifiers in 943 - Reporting Code - Entity Identifier Code - Name - Address Information - Contact Function Code - Reference Identification Qualifier - Description - Transportation Method/Type Code ## Find your trading partner for X12 943 9 partners, 10 channels. Choose a channel to inspect its listed document reference and implementation context. - [Americold Logistics, LLC.](https://www.stacksync.com/edi/americold-oracle) [Americold](https://www.stacksync.com/edi/americold-oracle/americold/x12-943-warehouse-stock-transfer-shipment-advice) - [Dot Foods, Inc.](https://www.stacksync.com/edi/dot-foods-inc) [Dot Foods, Inc (Distribution)](https://www.stacksync.com/edi/dot-foods-inc/dot-foods-inc-distribution/x12-943-warehouse-stock-transfer-shipment-advice) [Dot Foods, Inc (E-commerce)](https://www.stacksync.com/edi/dot-foods-inc/dot-foods-inc-e-commerce/x12-943-warehouse-stock-transfer-shipment-advice) - [Dow Inc.](https://www.stacksync.com/edi/dow-inc) [Dow](https://www.stacksync.com/edi/dow-inc/dow/x12-943-warehouse-stock-transfer-shipment-advice) - [Lineage, Inc.](https://www.stacksync.com/edi/lineage-logistics) [Lineage](https://www.stacksync.com/edi/lineage-logistics/lineage/x12-943-warehouse-stock-transfer-shipment-advice) - [NLS (National Logistics Services)](https://www.stacksync.com/edi/national-logistic-services) [NLS (National Logistics Services)](https://www.stacksync.com/edi/national-logistic-services/nls-national-logistics-services/x12-943-warehouse-stock-transfer-shipment-advice) - [RJW Logistics, LLC](https://www.stacksync.com/edi/rjw-logistics-llc) [RJW Logistics, LLC](https://www.stacksync.com/edi/rjw-logistics-llc/rjw-logistics-llc/x12-943-warehouse-stock-transfer-shipment-advice) - [Shiplab (via L&M Connect)](https://www.stacksync.com/edi/shiplab-via-lm-connect) [Shiplab (via L&M Connect)](https://www.stacksync.com/edi/shiplab-via-lm-connect/shiplab-via-l-m-connect/x12-943-warehouse-stock-transfer-shipment-advice) - [Ventura Foods](https://www.stacksync.com/edi/ventura-foods) [Ventura Foods, LLC](https://www.stacksync.com/edi/ventura-foods/ventura-foods-llc/x12-943-warehouse-stock-transfer-shipment-advice) - [Warehouse Leader](https://www.stacksync.com/edi/warehouse-leader) [Warehouse Leader](https://www.stacksync.com/edi/warehouse-leader/warehouse-leader/x12-943-warehouse-stock-transfer-shipment-advice) Catalog breakdown ## Where X12 943 Warehouse Stock Transfer Shipment Advice appears in this catalog The largest groups of classified 943 catalog entries are in logistics & transport, grocery & food and manufacturing & industrial. ### By industry - logistics & transport 6 channels - grocery & food 3 channels - manufacturing & industrial 1 channel ### By network - L&M Connect 1 channel Partner entries with the most listed channels - [Dot Foods, Inc.](https://www.stacksync.com/edi/dot-foods-inc) - [Americold Logistics, LLC.](https://www.stacksync.com/edi/americold-oracle) - [Dow Inc.](https://www.stacksync.com/edi/dow-inc) - [Lineage, Inc.](https://www.stacksync.com/edi/lineage-logistics) - [NLS (National Logistics Services)](https://www.stacksync.com/edi/national-logistic-services) - [RJW Logistics, LLC](https://www.stacksync.com/edi/rjw-logistics-llc) - [Shiplab (via L&M Connect)](https://www.stacksync.com/edi/shiplab-via-lm-connect) - [Ventura Foods](https://www.stacksync.com/edi/ventura-foods) FAQ ## EDI 943 questions ### What is an EDI 943? EDI 943 is the X12 Warehouse Stock Transfer Shipment Advice transaction set. Trading partners use it when stock has been shipped toward another warehouse. It carries the data for the warehouse transfer shipment, and your system matches it on transfer, sending location and shipped item. ### Who sends an EDI 943 and who receives it? The supplier or manufacturer sends the 943 to the remote warehouse or 3PL that will receive the inbound stock transfer. Your trading partner agreement confirms the direction and version for your account. ### When is an EDI 943 sent? A supplier releases a replenishment or stock-transfer shipment from its plant or another node to a 3PL warehouse and must tell the facility what is on the truck. Your partner guide sets any deadline or schedule for the document. ### What are the key segments in an EDI 943? Across 10 partner document references listed here, the business segments that appear most often include W06 (Warehouse Shipment Identification), N1 (Name), W27 (Carrier Detail), W04 (Item Detail Total), W03 (Total Shipment Information), N3 (Address Information). Each partner guide sets which segments and elements your account must send. ### What is the difference between EDI 943 and EDI 944? The 943 carries the warehouse transfer shipment and is used when stock has been shipped toward another warehouse. The 944 carries the warehouse transfer receipt and is used when a warehouse reports received transfer stock. ### What should I map for X12 943? Start with transfer, sending location and shipped item and the target warehouse transfer shipment. Define duplicate detection, allowed updates and response correlation before mapping individual fields. Use the partner guide to check required fields and their formats. ### How should I test 943 error handling? Test a transfer split across several shipments. Record stock in transit without prematurely increasing available stock at the receiving warehouse. Also test a lost response after destination processing so that a retry cannot create an unintended duplicate or repeated adjustment. ### Which partners list X12 943? The directory on this page links 9 partner entries that list this message. Choose your partner and channel, then confirm which messages and versions your account requires. ## Connect EDI to your business systems See how Stacksync can fit your enterprise EDI workflow. Bring one partner guide and a sample exchange to plan the system mapping, exception handling and production rollout. [Book an EDI demo](https://www.stacksync.com/book-a-demo) [Explore the EDI platform](https://www.stacksync.com/edi)