Delta load fails in 7.x flow for transactional data

Activation of DTP has failed due to lower case data. Here are the steps that i have taken to resolve the issue

a) Go to target and make the request red.

b) delete the request from the target.

c) Go to PSA and correct the data.

d) Run and activate the failed DTP again from PSA.

Do the same activity as many times the load fails

Are these correct steps? is there any other step that i should keep in mind?

Thanks