If the dispute is that he simply hasn't paid then you can just sue in the courts. If the dispute relates to the interpretation of the Deeds of Conditions then you write to the sheriff clerk in which the sheriff principal is based enclosing a copy of the deed and an outline of the dispute. The sheriff principal will look at the apps and respond via his clerk. To find out what court you should write to go to www.scotcourts.gov.uk and use the gazetteer on the home page. I hope that helps. Please leave a positive rating so that I am credited for my time.
What is the amount of th debt accrued since the trust deed as you can't pursue for any of the debt that existed up until the date of of the trust deed. Only subsequent charges are recoverable. You can get detailed information on the trust deed from the Register of Insolvencies which is online at www.aib.gov.uk. It is public information so your factor is wrong to cite DPA. Your factor should also be putting on a Notice of Potential Liability for Costs under the Tenements (Scotland) Act which essentially puts a charge on the property until the debt is paid. That would block any sale of the properties. If the factor hasn't put the notice on then the remaining proprietors could do so but it is more normal for the factor to do so. And if the owners is questioning the lack of maintnance of legality of the factor's appointment perhaps you should take his to arbitration at the same time. I hope that helps. Please leave a positive rating so that I am creditd for my time.
If you have the name of the person you can look up the details of the trust deed online.
It could mean that the trust deed was discharged or that it is administered outwith Scotland.