Error tracking in indirect expressions

If there is an error in evaluating an indirect expression, it is difficult to find what the error is, especially in complex long expressions.

For example the following error from evaluating the indirect expression displayed below.

FailReason  iif Error: Cannot find operator for these arguments:
arg1 of type DataItem<Bool>
arg2 of type DataItem<String>
arg3 of type DataItem<Float32>
Possible cause: argument type mismatch. Check the types of the used arguments.

attribute<Woning> Restclaim0 (AllocRegio) := =
    FirstSeqIndicator && FirstIterIndicator && FirstExtentIndicator
        ? ClaimSrc_Wonen
        : FirstSeqIndicator && FirstIterIndicator && !FirstExtentIndicator
            ? 'PerExtent/'+PrevExtent+'/Restclaim0 - PerExtent/'+PrevExtent+'/Netto_woningbouw/OverExtents/Per_AllocRegio'
            : FirstSeqIndicator && !FirstIterIndicator&& FirstExtentIndicator
                ? PrevIter+'/PerExtent/'+LastExtentName+'/Restclaim0 - '+PrevIter+'/PerExtent/'+LastExtentName+'/Netto_woningbouw/OverExtents/Per_AllocRegio'
                : FirstSeqIndicator && !FirstIterIndicator && !FirstExtentIndicator
                    ? 'PerExtent/'+PrevExtent+'/Restclaim0 - PerExtent/'+PrevExtent+'/Netto_woningbouw/OverExtents/Per_AllocRegio'
                    : !FirstSeqIndicator && FirstIterIndicator && FirstExtentIndicator
                        ? 'PerAllocatieSequence/'+PrevSeq+'/DisplacedWonenDoorWerken/DisplacedWonen_perAllocRegio'
                        : !FirstSeqIndicator && FirstIterIndicator && !FirstExtentIndicator
                            ? 'PerExtent/'+PrevExtent+'/Restclaim0 - PerExtent/'+PrevExtent+'/Netto_woningbouw/OverExtents/Per_AllocRegio'
                            : !FirstSeqIndicator && !FirstIterIndicator && FirstExtentIndicator
                                ? PrevIter+'/PerExtent/'+LastExtentName+'/Restclaim0 - '+PrevIter+'/PerExtent/'+LastExtentName+'/Netto_woningbouw/OverExtents/Per_AllocRegio'
                                : !FirstSeqIndicator && !FirstIterIndicator && !FirstExtentIndicator
                                    ? 'PerExtent/'+PrevExtent+'/Restclaim0 - PerExtent/'+PrevExtent+'/Netto_woningbouw/OverExtents/Per_AllocRegio'
                                    : const(0[woning],AllocRegio);

Here the error is that _“const(0[woning],AllocRegio)” _is not between single quotes, but it can’t be seen from the error dialog.