How can I do to block that an invoice cannot be posted for a Purchase order item?

Hello all, please can you help me with it?

We are trying to migrate POs with good receipts, but users don´t want that the invoice can be posted for this good receipt without checking before. There is no workflow in the invoicing process. Please can you tell me how can I do to block that the user can post the invoice to this purchase order item with good receipt posted?

Thanks in advance

Rosa