I am getting this error in my custom plugin to customize GL Lines:

Can't find method com.netledger.app.accounting.transactions.plugin.implementation.CustomLineImpl.setEntityId(string).

AI generated answer (using internal Slack threads):

The error message you're encountering is due to the fact that you're trying to set an entity on a GL line with an account of type AcctRec. This is not allowed for book-specific transactions. In NetSuite, the

setEntityId

method is used to set the entity for a GL line. However, the entity type must be appropriate for the account type specified in

setAccountId(accountId)

. For example, you cannot specify a vendor with an accounts payable account, or a customer with an accounts receivable account. In your case, it seems like you're trying to set an entity with an accounts receivable or accounts payable account type that is not allowed with a book-specific line. A book-specific line refers to a line that is specific to a certain accounting book. If you have the multi-books feature enabled in NetSuite, each subsidiary (and therefore vendors and customers via their subsidiary) are associated with certain books. To resolve this issue, you need to ensure that the account type specified in

setAccountId(accountId)

is appropriate for the entity type. If you're working with an accounts payable account, for example, you should be setting a vendor as the entity, not a customer. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******