Deployment error in Bicep when referencing an existing virtual network in another resource group

[v-aswinse]

bicepparam config used for existing vnet:

param existingVNetSubnetsDefinition = {
existingVNetName: '/subscriptions/9ad6f7f4-b0d6-4d88-a6d1-3fc2257d5583/resourceGroups/rg-exworks-v-aswinse-demo01/providers/Microsoft.Network/virtualNetworks/aivnet01exworks'
useDefaultSubnets: true
}

modified the subnet address prefix in bicep\infra\helpers\setup-subnets-for-vnet\main.bicep.
eg:
var defaultExistingVnetSubnets = [
{
name: 'agent-subnet'
addressPrefix: '192.168.248.0/25'
delegation: 'Microsoft.App/environments'
serviceEndpoints: ['Microsoft.CognitiveServices']
networkSecurityGroupResourceId: !empty(nsgResourceIds.agentNsgResourceId) ? nsgResourceIds.agentNsgResourceId : null
}

Attached the error when we run azd provision.