000380 : <value> is in a topology
Integrate does not allow feature classes that participate in a topology. Every topology already has a specific cluster tolerance that is used in topological processing operations.
Consider validating your topology instead. Like Intersect, Validate also performs cracking and clustering of your data. If you want to use a different cluster tolerance than the one specified in your topology, create a new copy of your feature class outside of your topology and run Integrate on this data.