Cannot find function selectNewLine in object standard subrecord

AI generated answer (using internal Slack threads):

The error "Cannot find function selectNewLine in object standard subrecord" is occurring because the

selectNewLine

function is not available in standard mode. This function is only available in dynamic mode. If you are loading a record with

record.load({type: 'type', id: 'id', isDynamic: false})

, the

selectNewLine

function will not be available. If

isDynamic

is set to

true

, then you can use it. In standard mode, you should use

setSublistValue

instead of

selectNewLine

. Here is an example of how to use `setSublistValue`:

javascript
salesOrder.setSublistValue({
    sublistId: 'item',
    fieldId: 'item',
    line: 1,
    value: itemId
});

salesOrder.setSublistValue({
    sublistId: 'item',
    fieldId: 'quantity',
    line: 1,
    value: quantity
});

Also, remember that line indexes start at 0, not 1. So, if you are trying to set the value for the first line, you should use

line: 0

. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******