The DST should be a clean 1031 exchange. Line 25a is for something other than real estate involved in the deal. Take a look at line 15, Form 8824. Is the property received equal or greater than the net sales price? If not, the program may be looking for the missing amount. Perhaps a cash boot or closing costs
Be sure you are using the final 1031 substitute form 1099 provided by DST. The exchange expenses can alter your value.
If everything is fine, enter zero so the program knows there is nothing else.
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