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invalid operation 427 Opos issues

Microsoft Dynamics RMS Forum

Robyn Extreme Lifestyle asked a question on 19 May 2017 6:54 PM

invalid operation 427 Opos issues

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I had reinstall RMS and I can not configure the label or receipt printers. I am receiving invalid operation 427 : the opos device is not opened. Any suggestions?

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Replies (3)

MGabr responded on 14 Nov 2017 3:04 AM

invalid operation 427 Opos issues

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me too

ant suggestion

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angilina890 responded on 16 Sep 2019 11:43 PM

invalid operation 427 Opos issues

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I have just installed the Epson Printer on my MAC, but it cannot be run as I can't find the valid drivers for the printer. That is why, it is showing Epson Printer Communication Error on my system. Can anybody suggest me some solutions for the error?  

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Kevin Antosh responded on 17 Sep 2019 8:48 AM
My Badges

invalid operation 427 Opos issues

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Hi!  Can you please let me know what version of the Microsoft Dynamics RMS Point of Sale software you are running (can be found in RMS Manager under "help" and "about store operations").

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