Hello @v-xida-msft Kris Dai,
Thank very much for your response, I can elaborate a little bit about what I'm trying to achieve.
I have a business workflow with 5 steps that are 5 different entity, the first entity is Client where I define the information off the client, the name of the project and the type of project and my second entity is the Sites where I upload data to the CDS.
What I want to do is after I put the information about the client is to select the various Sites thought the one field that I created with all the sites IDs.
For example I create the client A with a project name B and the type of project C and I want to select the Sites D,E,F,G ... from my site list to associate to that project.
At this moment with my workflow I can only create a new site instead of select the site that I have already in the data.
I hope to clarify better my question.
Thank you,
Best Regards.