Form 1116 Foreign Tax Credit Computation Worksheet Line 1k

I am trying to trace the calculation of the value showing in my Form 1116 Foreign Tax Credit Computation Worksheet Line 1k. The software help stops at line 1j and I cannot find anywhere a worksheet backing up the figure. I'm not saying the number is inaccurate (although it is questionable) but I want to verify its calculation. 

 

Where might I find the support for this value among my 1040 work papers, please?

 

FWIW, I am an individual filing jointly for tax year 2022 and have  some passive income from a foreign source for which I want to get a credit. I've received a credit each year over multiple years in the past and never ran into this issue before (at least that I noticed).

 

Your advice appreciated, thank you.