If there are users in the live Dynamics GP company or if there are "stuck" inventory records anywhere in the company, GP will not let you run Inventory Reconcile.
You receive a message saying that the process cannot be run while invoices are being posted, even though they're not.
There's a series of T-SQL scripts that you can run to eliminate this error and be allowed to run Reconcile, after asking users to be out of GP.
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