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Hi everyone! Hope you all are doing well. I am trying to set Inventory Details on Inventory Adjustment record but even after following the whole flow as first setting item then location then Adjust inventory by when I try to add Inventory details subrecord I get an error  TypeError Cannot read property 'selectNewLine' of null can anyone please help me as to what I am doing wrong?

Keep in mind this will simply not work in client script for the current record

This is where I am confused as it does not work in before load script as well

`var currentRecord = context.currentRecord;`
        `var currentSubrecord = currentRecord.getCurrentSublistSubrecord({`
            `sublistId: 'inventory',`
            `fieldId: 'inventorydetail'`
        `});`
        `currentSubrecord.selectNewLine({`
            `sublistId: 'inventoryassignment'`
        `});`
        `currentSubrecord.setCurrentSublistValue({`
            `sublistId: 'inventoryassignment',`
            `fieldId: 'issueinventorynumber',`
            `value: serialnumber,`
            `ignoreFieldChange: false`
        `});`
        `currentSubrecord.setCurrentSublistValue({`
            `sublistId: 'inventoryassignment',`
            `fieldId: 'quantity',`
            `value: parseInt(-Subrecordquantity),`
            `ignoreFieldChange: false`
        `});`
        `currentSubrecord.commitLine({`
            `sublistId: 'inventoryassignment'`
        `});`

i havent tried the before load user event script for setting line item fields

that doesnt really sound sane for line items on create, which is the only time you have a chance at getting that to work

you want to consult <https://system.netsuite.com/app/help/helpcenter.nl?fid=section_4712495741.html|Supported Deployments for Subrecord Scripting >

The only way to edit sublist subrecords like Inventory Detail is in deferredDynamic / Standard mode. <https://stackoverflow.com/questions/43526532/unable-to-set-inventory-detail-on-item-fulfillment-record-suitescript-2>