Resolve “internal error Please check if the fieldset is created”

To resolve Internal error when clicking an invoice holding a subtotal line item in my account page in SCA, resolve with the following steps: 

 1. Locate the following file in the SCA Module: \StoreItem@X.X.X\SuiteScript\StoreItem.Model.js 

 2. Find the following line of code:

if (!item.id || !item.type || item.type === ‘Discount’ || item.type === ‘OthCharge’ || item.type === ‘Markup’)
3. Replace with the following line: 

if (!item.id || !item.type || item.type === ‘Discount’ || item.type === ‘OthCharge’ || item.type === ‘Markup’|| item.type === ‘Subtotal’)

 4. Deploy changes