Field help (CPTSTRDAT) 

The period to be distributed is the period taken into account to calculate the amounts to be distributed.

On a dimension defined as the dimension to be distributed in the distribution structure, the program sums up all the postings completed over the period defined by this field. This total represents the amount to be distributed for this dimension.

When these dates correspond to the exact fiscal year period start and end dates, the generated journal entries are identical whether Processing based on balances is selected or not. See the limitations when the allocation has multiple lines.

SEEINFO By default the range for this period is that of the current financial year.