Epson TM-T20II-i Technical Reference Manual page 89

Checking the print results
When the spooler is disabled
After printing, the job ID and print results are returned to the application. Also, when printing
cannot be performed, the job ID, print results, and error code are returned.
When the spooler is enabled
• When print data cannot be spooled:
[JobID, Print result = false, Error code = EX_SPOOLER (spooler stopped)] is returned to the
application.
• When print data can be spooled:
After spooling the print data, [JobID, Print result = true] is returned to the application. Printing is
not performed at this point. Make an inquiry from the application to this product to confirm if
printing was performed.
Checking the print results from the application
The method for checking the print results differs for each system.
• ePOS-Device XML and ePOS-Print XML:
Request the empty print data specified for the job ID from the application.
For details, see the ePOS-Device XML User's Manual or the ePOS-Print XML User's Manual.
• ePOS-Device SDK for iOS, ePOS-Device SDK for Android, ePOS-Device SDK for JavaScript:
Use an API that acquires job IDs to acquire the print results from the application.
For details, see the ePOS-Device SDK for iOS User's Manual, the ePOS-Device SDK for Android
User's Manual, and the ePOS-Device SDK for JavaScript User's Manual.
• Server direct print:
Return the empty print data specified for the job ID as the response to the print request from this
product.
For details, see the Server Direct Print User's Manual.
• Device data notification:
Request the empty print data specified for the job ID in ePOS-Device XML format.
For details, see the Device Data Notification User's Manual.
When an inquiry is made from the application for the print results, this product returns the
following information.
• Printing succeeded:
• Printing failed:
• Printing or print forwarding:
Chapter 3
[JobID, Print results = true]
[JobID, Print result = false, Error code = Printer status]
[JobID, Print result = false, Error code = Printing]
Application Development Information
3
89