Hi Team,
I am trying to convert my FBX character to Non Standard character but this error popup when clicking Active button,
Attached is the FBX file if any one can assist to convert,
Best Regards,
Issa.

Try to import via 3DXchange 6 (not 3DXchange 7). Here it is working!

76% of original size (was 661x19) - Click to enlarge
Greetinks from Germany
Kalle 3

Wenn es nicht funktioniert, ist es noch lange nicht kaputt!

Wenn es nicht kaputt ist, reparieren wir es auch nicht.

Wenn es funktioniert, stell keinen Scheiß damit an!

It will work in version 7 (you don't need to do it in 6) -- I just tried and it converts just fine.

However, the early versions of 7 had a bug that prevented this.  Just make sure you've updated to the very latest version (go to Help and Check for Update).

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Alienware Aurora R16, Win 11, i9-149000KF, 3.20GHz CPU, 64GB RAM, RTX 4090 (24GB), Samsung 870 Pro 8TB, Gen3 MVNe M-2 SSD, 4TBx2, 39" Alienware Widescreen Monitor
Mike "ex-genius" Kelley

Hi Kelleytoons 
Thank you for your advice,
I tried to Update the software but require me to again, why do i need to buy again,
Or there is another way i can opt,
Please assist,
Regards,
Issa.

Sorry, there must be some sort of language issue here as I'm not completely understanding you.  If you are having trouble updating, I'd advise installing the Real Illusion Hub software -- it will update ALL your programs (and that may be the issue, that you need to update more than just XChange).  And if you still can't do it you can put in a trouble ticket to RL and ask for their help (or perhaps Peter will jump in here).

The version of XChange that is the latest is 7.22.1703.1 -- you need to be running this version.  And it may require updating iClone as well (or even first -- again, the Hub software will help with this process).

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Alienware Aurora R16, Win 11, i9-149000KF, 3.20GHz CPU, 64GB RAM, RTX 4090 (24GB), Samsung 870 Pro 8TB, Gen3 MVNe M-2 SSD, 4TBx2, 39" Alienware Widescreen Monitor
Mike "ex-genius" Kelley

Hi Team,
I have already updated the software,
But still i have this error, see attached image.
Regards,

Now THAT error sounds like you mapped the bones improperly.  How are you selecting them?  Be very careful how you do this (if you can make a video showing your selection process that would help, but in general the two bones, the hip and the spine, need to be selected right.  I don't have the time right now to download your project and try again, but if you can't figure it out and no one else can help I'll see if I can give it a go this afternoon).

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Alienware Aurora R16, Win 11, i9-149000KF, 3.20GHz CPU, 64GB RAM, RTX 4090 (24GB), Samsung 870 Pro 8TB, Gen3 MVNe M-2 SSD, 4TBx2, 39" Alienware Widescreen Monitor
Mike "ex-genius" Kelley

Thank you so much for your support,
Let me try again and i will record all process and share,
Thank you in advance,
Issa.

The basic problem is with your rig -- it's pretty bad (the spine and hip in particular are wonky).  You can still get it into iClone, but the motions won't work very well (just select not the long bone but the kind of y-shaped bone that's directly above the hip bone).

What you really need do is re-rig this character (you can do this in Mixamo).

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Alienware Aurora R16, Win 11, i9-149000KF, 3.20GHz CPU, 64GB RAM, RTX 4090 (24GB), Samsung 870 Pro 8TB, Gen3 MVNe M-2 SSD, 4TBx2, 39" Alienware Widescreen Monitor
Mike "ex-genius" Kelley

I am able to characterize the skeleton just fine, after finding the correct bone to use for the hip.

The problem is the mesh is not correctly weighted to the leg bones. The entire leg is weighted to the lower-leg bone, so the knee cannot bend with the skeleton properly.
76% of original size (was 661x19) - Click to enlarge