How to obtain a Schengen visa after being denied entry to Germany with a visa issued by Spain?

I am from Vietnam.

I had a Schengen visa with multiple entries from 2 July 2016 to 2 July 2017 issued by Spanish Embassy. My daughter (15 years old) had a Schengen visa with one entry from 25 January 2017 to 4 February 2017 issued by Spanish Embassy. I did it for her.

We flied to Germany with these visas on 25 January 2017, and both of us were denied to enter Germany due to visa misuse at Frankfurt Airport. They put big 'denied' stamps on our visas.

After research about this issue, I understand that I was wrong to think that with a Schengen visa, I could go to any countries in Europe. I understand now if I would want to go only to Germany, I should apply for a Schengen visa issued by German Embassy.

I understand that even I knew I would have no problem to apply for a Schengen visa via German Consulate. But I thought it would take time for my daughter to get it in such a short timing that she can go with me to Berlin for this Lunar New Year. That's why I did the visa via Spain which was much quicker. Now I've found out that I was totally wrong.

I understand that the incident has been recorded in the SIS, and it would create a very difficult situation for me to apply for another Schengen visa.

I have a clear intention to apply for a Schengen visa through German Embassy.

I have very good and clean history of travel and financial situation:

• Current visas I've had:

  1. Multiple entries to Canada till 2025
  2. Multiple entries to UK till 2021
  3. Multiple entries to US renewal every one year
  4. APEC business travel card (Asia-Pacific Economic Cooperation) till 2021.

• Old visa:

  1. A number of Schengen visas issued by French Consulate (in 2011), Spanish Consulate (in 2015, 2016 from one entry to multiple entries in three months, then multiple entries in one year)
  2. I studied in Australia 2004-2006.

• Financial cover:

  1. I have employment for a indefinite term with a managerial position in a Spanish corporation.
  2. Good financial statements to cover all requirements if it's needed

• Invitation to Germany: My German boyfriend will do anything needed to submit to German Embassy for my visa application. He has his own business, and quite strong on his position.

My questions are:

1. How much difficulties when I apply a visa to Germany under my current circumstance?

2. What would be the procedure to clear my issue regarding the declining my Spanish visa at Germany border?

3. Is there any tolerance for my visa application that I would strong show how much I have been regret for the mistake, and would like to fix it immediately.

I've been very depressed about this issue. I put my daughter in a very bad situation, and did a very bad role model into her early stage of growing up as an adult.

I would like to show her that people make mistakes. There are mistakes can be fixed, and can't be fixed. This issue is hope to be fixed with positive attitude and the willingness to be a good person. That's why I wonder how much the tolerance in the SIS would grant to us.