Hello, I have an id variable  (survey_unique_id) that, for some, does not  "increment by 1(up to 2056)" for a portion of observations. I want to keep the first observation "50001" and retain the vaue+1 for each observation that follows and continue this procedure until "52056".   I was able to create a new dataset just containing observations where "id" with 50001 only was available, without losing information of importance.    Hope this is clear.   Thanks.   (Original dataset)                                                                 Example of what I had in mind for the variable (survey_unique_id) to look like. 5001 5002 5003 5004 5005 5006 5007 5008 5009 5010 etc... ... View more