I am currently working on integrating IPP printing capabilities in my Android application using the JIPP library. While constructing an IPP request, I encountered an issue where adding specific attributes leads to a client-error-bad-request response from the printer.

Here are the details:

Printer Model: HP Color LaserJet M555

Printer Capabilities Extract:

• sides-supported=[one-sided, two-sided-long-edge, two-sided-short-edge]

• copies-supported=1..32000

IPP Request Construction:

When I construct the IPP request with only the essential attributes, it works perfectly:

IppPacket.Builder builder = IppPacket.printJob(uri)
    .putOperationAttributes(
        printerUri.of(uri),
        requestingUserName.of("user")
    );

This request prints successfully. However, when I add the copies and sides attributes, the printer responds with a client-error-bad-request.

Here is the modified code that results in the error:

IppPacket.Builder builder = IppPacket.printJob(uri)
    .putOperationAttributes(
        printerUri.of(uri),
        requestingUserName.of("user"),
        documentFormat.of("application/pdf"),
        copies.of(1),  // Adding copies attribute
        sides.of("one-sided")  // Adding sides attribute
    );

Error Response:

IppPacketData(packet=IppPacket(v=0x200, c=client-error-bad-request(1024), r=0x1) [AttributeGroup(operation-attributes, [attributes-charset="utf-8" (charset), attributes-natural-language="en" (naturalLanguage)])], data=com.hp.jipp.encoding.IppInputStream@86751ed)

Given that the printer’s capabilities indicate support for one-sided and copies ranging from 1 to 32000, why would including these attributes in the IPP request result in a client-error-bad-request? Is there a specific format or additional attribute dependencies required when adding copies and sides that I might be missing?
Additional Information:

• IPP Library: JIPP

• Network Setup: The printer is connected and reachable via the provided URI.

• Log Output: Detailed logging of the IPP request and response is available if needed for further debugging.

I appreciate any guidance or suggestions you can provide to resolve this issue.