Resolve Error: REP-1272: Column ‘CF_1’ may not be used as break Column.

While Oracle developer Develop the RDF Report and use some Formula column in this report and compile the RDF after that generate the XML then report showing the below error. 

Error: REP-1272: Column ‘CF_1’ may not be used as break Column.

We resolve this issue use the below steps:

Step 1: Changed the Break Order to None from Ascending.

Right Button click on Formula column and then click ==>Property Inspector

Changed the Break Order to None from Ascending

Step 1: Test it's working or not.

 Now it's worked.