<span class="bold">Update Lot-Specific Conversions</span>

Lot-specific conversions are date-effective, meaning that changes to a conversion rate over time are always done with a POST operation. Each new value for the conversion rate automatically end dates the active conversion record as it creates the replacement with the updated conversion factor. It is not possible to create an update to the conversion having the same conversion factor, with one exception. As part of the 26B release, conversions may now be modeled as inverse values. A conversion rate of 0.0005 Grams (Mass) = 1 Each (Quantity) may now be modeled as 2000 Each (Quantity) = 1 Gram (Mass).

In the event you simply wish to update an existing lot-specific conversion to use an inverse value, you may use the PATCH operation, and enable the InverseConversionFlag with a value of “true” and an InverseConversionFactor. So long as the calculated conversion remains the same, the active conversion will be updated to show inverted values going forward.

Example URL

Use this resource URL format:

PATCH

/fscmRestApi/resources/latest/lotUnitOfMeasureConversions/{LotConversionId}
{
"InverseConversionFlag": true,
"InverseConversionFactor": 2000
}

Example Response

Here's an example of the response body in JSON format:

{
    "LotConversionId": "100106932937841",
    "InventoryItemId": "100100543044898",
    "ItemNumber": "OM-RT-DualUOM-Item005",
    "ItemDescription": "OM-RT-DualUOM-Item005",
    "OrganizationId": "207",
    "OrganizationName": "Seattle Manufacturing",
    "OrganizationCode": "M1",
    "LotNumber": "VBL50720",
    "TransactionUOMBaseCode": "Lbs",
    "TransactionUOMBaseName": "Pounds",
    "TransactionUOMClassCode": "Weight",
    "TransactionUOMClassName": "Weight",
    "PrimaryUOMBaseCode": "Ea",
    "PrimaryUOMBaseName": "Each",
    "PrimaryUOMClassCode": "Quantity",
    "PrimaryUOMClassName": "Quantity",
    "ConversionFactor": "0.0005",
    "StartDatetime": "2026-01-08T05:57:00+00:00",
    "EndDatetime": "2026-01-08T13:13:44+00:00",
    "ReasonId": null,
    "ReasonName": null,
    "InverseConversionFlag": true,
    "InverseConversionFactor": 2000,
. . .
}