My job as a developer | Tricky task

I kept working on my project today at my workplace. All the other days, I was able to write all the time without even thinking, but today I had one problem which took me a lot of time. I currently program a tool to synchronize the local database with a CRM (Costumer Relationship Management). First I had no field on the CRM that I could use as an id/primary key. I need such field because it is possible that some people have the same last- and first name. Later I found out, that I could just create a new field and fill it with the id from the database. Later I found out that I had the problem caused in the moment I requested all contacts to be shown. I already need the id field because the normal function that requests all contacts, returns just a list with all contacts and their last and first name.

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