Proportional factor calculation ending with runtime error

Dear Experts,

When executing the propotional factor calculation, it is working without problem when I select "Fixed proportions" as a Proportion calculation type

However, when I select "Detailed proportion" with Periodicity "Week" it is ending with ABAP error

ShrtText

Divide by 0 (type F) in the program "/SAPAPO/RMDP_SHARE_MANAGER".

Runtime Errors COMPUTE_FLOAT_ZERODIVIDE

Exceptn CX_SY_ZERODIVIDE

but I do not understand what is causing the error since

would you have an idea?

Thanks a lot in advance

E.