In my case, even without all my paperwork. I have a precaria but have still not presented my police report from the UK.
Edit to expand on the details. I applied for residency last year (June) believing a family member could sort out my police report in the UK and send it to me. They couldn't do that so I would have to return to the UK to sort it out myself. Yes, I know there are services that do this for me, but as I was under no pressure I decided to just wait for the next time I go to the UK.
In Imigraciones, they gave me the precaria and told me I must update it every three months (I think it is monthly under normal circumstances?) and the Prorroga too that shows I am eventually going to get my police report. When I went though the process last year I was just honest and said I was unlikely going to present my police report until December 2018 so they dated my prorroga until then. I could go to Europe in December so went again and extended it, this time they give me threee months. I returned in March and extended it again. Each time I have gone to renew the precaria and/or prorroga (unfortunately not on the same days) I have not received a single question about my situation. In fact, when I tried to talk about my situation to one person in the office, they seemed utterly bothered by it and just give me the prorroga form to fill in again.
I have done this 3 times (I think more times for the precarria because it was monthly renewal the first 3 months). Renewing the precaria is time consuming (a couple of hours in Retiro), the prorroga is in and out at the front desk, 10 minutes. I am going to Europe in May and will get my report.