Supported formats for period column headers
Each planning frequency requires a specific format for the period column header. The delimiter for the data is always a semicolon.
The abbreviations DD, MM, Q, and YYYY that are used for the supported period formats have these meanings:
- DD – day with the leading zero
Example: 01
 - MM – month with the leading zero
Example: 01
 - M – month without the leading zero 
Example: 1
 - YYYY – year
 - Q – quarter
Example: Q1
 
These period formats for different planning frequencies are supported.
- Weekly, Bi-weekly
 - For weekly and bi-weekly planning, the start date of the weekly or
          bi-weekly period is used. The configuration set is divided into weekly or bi-weekly periods. Weekly
          and bi-weekly periods start on Monday and end on Sunday. 
- DD.MM.YYYY
 - DD-MM-YYYY
 - DD_MM_YYYY
 
 - Monthly
 - For monthly planning, the period format is the year followed by the
          month without the leading zero character.
- YYYY-M
 - YYYY_M
 - YYYY/M
 
 - Quarterly
 - For quarterly planning, the period format is the year followed by the
          quarter Q1, Q2, Q3, or Q4.
- YYYY-Q
 - YYYY_Q
 - YYYY/Q
 
 - Yearly
 - For yearly planning, the period format is the four-digit year, YYYY.