Steps

Authenticate and confirm the correct endpoint version by checking GET /entity/Default/<version>/swagger.json for the InventoryAdjustmentEntry entity.
Create the adjustment document: PUT /entity/Default/<version>/InventoryAdjustmentEntry with a JSON body including Description, Date, and a Details array containing InventoryID, WarehouseID, LocationID, Qty, UOM, and UnitCost.
Set the AdjustmentType on each detail line to 'Receipt' (positive adjustment) or 'Issue' (negative adjustment) based on the variance direction.
Retrieve the created document reference number from the response's ReferenceNbr field.
Release the adjustment by calling the Release action: POST /entity/Default/<version>/InventoryAdjustmentEntry/<ReferenceNbr>/Release — this posts the document to inventory and GL.
Verify the new on-hand quantities via GET /entity/Default/<version>/InventoryQuantities or by querying the InventorySummaryEnquiry endpoint.

Known gotchas

Releasing an inventory adjustment triggers GL postings; if the adjustment date falls in a closed fiscal period, the release action will fail with a period-closed error — use a date within the current open period or re-open the period before releasing.
The InventoryAdjustmentEntry endpoint in older contract versions may not support lot/serial number detail lines in the Details array — lot/serial assignments may require writing to a nested subentity or using the GS1 scanning action endpoint.
Acumatica rate-limits REST API calls per session; creating a large number of individual adjustment lines via separate PUT calls can hit the threshold — batch all lines into a single PUT request in the Details array instead.

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Post an inventory adjustment in Acumatica via the contract-based REST API to correct on-hand quantities after a cycle count

Steps

Known gotchas

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