QB Issue Resolution:

To use payroll setup to enter YTD payroll for another year, change your system date to that year and then run payroll setup.

It’s sort of odd to do this.  Why do you want to set up 2014 payroll when 2015 is almost over?  It could be there is a better way…

Resolution for Issue 'I just purchased QB’s 2016 with enhanced payroll and have entered all 2015 payroll history. Is it possible for me to enter 2014 data as well?' available: Yes (Solved).
Source: Intuit Community forum.

I just purchased QB’s 2016 with enhanced payroll and have entered all 2015 payroll history. Is it possible for me to enter 2014 data as well?: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

Support for 2015 payroll history
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Error Recovery for 2015 payroll history [Canada]
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