# How to add a mobile app to Priority ERP > Source: https://netray.co/integrations/priority-mobile-app > Publisher: Netray (netray.co), AI and integration engineering for ERP and manufacturing systems. > Section: Integrations ## Short answer Start with what Priority already offers for mobile access, then build a focused app for scanning, inventory moves and labor reporting over the OData API where it falls short. The design hinges on offline behavior, barcode flows and server-side validation. ## System Priority ERP ## Capability mobile-app ## Intro Priority runs in the browser and has mobile access options, which covers sales reps checking customers and managers approving documents. The gap shows up on the shop floor and in the warehouse, where users need a scan-first, few-tap workflow on a rugged handheld rather than the full forms. A good mobile app is narrow. It does three to five jobs fast, such as receiving against a PO, moving stock between bins, reporting labor on a work order, and counting. Everything else stays in the main Priority screens. This page covers how to decide between built-in options and a custom app, which Priority interfaces to build on, and the offline and validation problems that decide whether operators trust the app. ## Use Cases ### Goods receiving against a purchase order **Description:** Scan the PO or packing slip barcode, show expected lines, scan items and enter quantities, then create the receipt in Priority. ### Warehouse transfers and bin moves **Description:** Scan source bin, part and destination bin to post a transfer, with checks for available quantity and valid locations. ### Work order labor and completion reporting **Description:** Operators scan a work order and operation to start and stop time, report good and scrap quantities, and see the next step. ### Cycle counts **Description:** Counters receive a list of locations, scan and enter quantities, and submit variances for supervisor approval before adjustment. ### Pick and ship confirmation **Description:** Pickers scan parts against a pick list for a sales order, and shipping confirms the delivery with packing details. ### Field service visit reporting **Description:** Technicians view assigned service calls, log time and parts used, capture a photo and customer signature, and sync back to the call record. ## System Surface - Priority OData REST API for reading parts, bins, orders and work orders, and for creating receipts, transfers and reports through forms with their normal validation. - Priority Web SDK, useful for building a web-based mobile client that runs forms logic in the application layer. - Priority's built-in mobile access and any partner mobile modules, whose features vary by version and should be evaluated first. - Priority interfaces and procedures for batch-loading counts or transactions captured offline. - Barcode and label design in Priority, since the app depends on what is printed on labels (part, lot, serial, bin, document). ## How It Works ### Audit the built-in options **Detail:** Try Priority's own mobile access and any partner module on the target devices. If it handles two of your three jobs well, extend rather than rebuild. ### Define a small task list **Detail:** Write each task as a scan sequence with the Priority form it ends in. If a step cannot be stated in a line, it is too complex for the handheld. ### Choose the client type **Detail:** A progressive web app is cheapest and works with camera scanning; native or Android wrappers suit devices with hardware scanner keys and better offline storage. ### Build an API layer **Detail:** Put a small service between the app and Priority that holds credentials, maps device users to Priority users, and returns compact responses. ### Handle offline and sync **Detail:** Queue transactions with idempotency keys, cache part and bin lists, and replay on reconnect while surfacing conflicts clearly. ### Validate server-side **Detail:** Never trust the device. Check availability, status and permissions in the service and rely on Priority form logic for final validation. ### Pilot on one area **Detail:** Roll out to one warehouse zone or line, measure scan errors and time per task, then expand. ## Example Flows ### Receive against a PO **Trigger:** A truck arrives and the clerk scans the PO barcode. **Steps:** - The app fetches open PO lines through the service. - The clerk scans each part and keys or scans quantities. - Over-receipts beyond tolerance are blocked. - The service creates the receipt through the API and returns the receipt number. - Labels for new lots are printed to the nearest printer. **Result:** Receiving is posted on the dock, so planners see stock the same hour. ### Offline cycle count in a warehouse dead zone **Trigger:** A counter loses connectivity in an aisle. **Steps:** - The app keeps counts in local storage with timestamps. - Counts show as pending on the device. - On reconnect, the app submits them with idempotency keys. - The service compares them with on-hand and creates variance lines. - A supervisor approves adjustments in Priority. **Result:** Counting continues without connectivity, and adjustments still go through approval. ## On Prem A mobile app for an on-prem Priority deployment works well if the service sits in your network and devices reach it over Wi-Fi inside the plant, with a VPN or a reverse proxy for outside use. Keep the Priority server unreachable from the internet and expose only the app's API with device authentication. For voice or photo features, use local models for transcription and image checks so shop-floor audio and part photos stay on-site. Test Wi-Fi coverage and device battery behavior before blaming the app for slow scans. ## Security - Authenticate each device and user, with short-lived tokens, and revoke lost devices from a central list. - Map each operator to a Priority user or a controlled badge identity so transactions are attributable. - Limit the app's API to its specific tasks, not a generic pass-through to the OData endpoint. - Encrypt local offline storage and wipe it on logout or remote revoke. - Throttle and log requests, and alert on repeated failures or odd patterns. ## Options ### Priority built-in or partner mobile module **Fit:** Best first stop for approvals, customer lookups and simple actions on standard forms. **Effort:** Days to configure; limited scan workflow customization. ### Third-party warehouse or MES mobile product **Fit:** Good when you need full warehouse management features and the product supports Priority. **Effort:** Weeks to months, with license and integration cost. ### Custom app with a partner like Netray **Fit:** Right for a few tailored scan workflows, offline needs and optional local AI features such as photo-based checks. **Effort:** A first workflow in a few weeks, then add tasks incrementally. ## Pitfalls - Copying a full Priority form onto a small screen instead of designing a scan-first flow. - Skipping offline design and discovering dead zones on the first day. - Letting the device decide availability or status rather than checking server-side. - Not aligning labels and barcodes with what the app scans, so lots and bins cannot be read. - Using one shared login for all operators, which destroys traceability. ## Faq ### Does Priority have a mobile app? **Answer:** Priority offers mobile access options, and partners add modules, but the exact capabilities vary by version and package. Evaluate them against your real tasks. For scan-heavy warehouse and shop-floor work, many sites still add a focused custom or third-party app. ### Can a mobile app post inventory transactions to Priority? **Answer:** Yes through the OData API or load interfaces, which pass through Priority form validation. Use idempotency keys to avoid duplicates on retries, check availability server-side, and decide which adjustments need supervisor approval. ### Should I build native or a web app? **Answer:** A progressive web app is quickest and works for camera scanning and light offline use. Choose native or a wrapper if you need hardware scanner integration, robust offline storage or device management. Start with the web app if the task list is small. ### How do I handle offline work? **Answer:** Cache the lists the task needs, queue transactions locally with unique ids, and replay on reconnect. Decide in advance which actions are allowed offline and how conflicts, such as stock already moved, are shown to the user. ### Can the app run without internet? **Answer:** Yes if the service and Priority are on your local network and devices use plant Wi-Fi. Internet is only needed for optional cloud features. Plan for Wi-Fi coverage, and use a local model for any AI features to stay fully inside the site. ## Search terms priority erp mobile app, priority software barcode scanning, priority erp warehouse mobile, priority erp shop floor app, priority erp inventory app, priority erp handheld scanner, priority erp labor reporting mobile, priority erp offline mobile, priority erp odata mobile, priority erp field service app --- Talk to an engineer: https://netray.co/contact?intent=erp_ai | Machine catalog: https://netray.co/agent/catalog.json