[SOLVED] Planning four task of 0,25 day in one day

Hello 
we need to plan four tasks each of 0,25 day for one ressource l in one day.
assignation of the ressource  is 0,25 for each task with 100%
planning mode is regular between two dates 
ressource capacity = 1 
We tried all the combinations only three tasks can be planned , I tried one task of 0,5 day and two tasks of 0,25 day assignation it only can schedule 0,75 day of assignation whatever the combination.

Thanks  for your help and assistance 

Hello,

What is the rate of your resource affection on your project ? 
Is it possible that your resource is assigned in parallel to another activity of another project?

Hello
the rate is 100% and the ressource is not assigned to other tasks or porjects.
if I affect them to two tasks 0f 0,5 day it works fine , but if I affect them same period in four tasksof 0.25 day it ony takes into consideration onl three tasks of 0.25 day in the same day which is a strange behaviour

issue is solved , there was a task in another project not included in the calculation , doing calculculation fior all the prject soved fixed the planning.
thank you for your assistance