In TaxSlayer Pro, when starting the Texas Franchise Tax No Tax Due Report, you are presented with a set of Yes/No questions, and an answer of Yes to any of them qualifies the entity to file the No Tax Due report.
Once the report has been created, if you then change the Yes answer(s) to No, you won't be able to adjust Total Revenue. Of course, if all the answers are No then the report itself is presumably not going to be filed since the entity no longer qualifies to file it, however once one of the questions has been answered Yes again, Total Revenue will be adjustable if needed.