Max number of asset reached

Max number of asset reached

We are trying to mark 8x monitors as Items Received in the Purchase area so they get added as assets. It allowed me to mark some of the order as received but said I couldn't add the rest as we had reached a maximum for that asset? Unfortunately I'm unable to replicate exactly as it now shows the attached error instead when tyring to mark some more of them in that order as received again. Any ideas?

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