Long Term in Consolidation analysis

In minimum excess pore pressure, we do not set a time interval, and we cannot activate/deactivate soil, structures and loads: these settings are kept the same as the previous stage while the calculation continues until the maximum (absolute) value of the excess pore pressure is below the specified value for the excess pore pressure, |P-stop| One of the results is then the time it needs to consolidate.

In a Degree of consolidation type of analysis, that you performed, the calculation is similar to the Minimum excess pore pressure calculation option, in which the Minimum excess pore pressure parameter (see above) is set to a value as defined by the maximum excess pore pressure in the previous phase (P_{max,previous phase}) and the defined Degree of consolidation ( U ):
    Minimum pore pressure = (100 – U)% * P_{max,previous phase}
The calculation should stop when the maximum absolute excess pore pressure is below this calculated value of Minimum excess pore pressure.
So the error message [105] means that Prescribed minimum excess pore pressure in a consolidation analysis not reached which is probably due to a soil failure. Please inspect the input data and the calculation results in Output to evaluate why it fails. 

thank you for your reply. I would like to know if there was the problem on the calculation of degree consolidation, because I already calculate with that formula, but still it cannot stop and continuous until it gave question mark again. Is there any false from my modelling? if there was wrong input data, which side is wrong? because I already input with the correct data. help me. thank you

Without the model it is difficult to check why soil in your model fails. Please create a service request from the following link and one of our support engineers will be able to assist you better in identifying the cause:
https://apps.bentley.com/srmanager/ProductSupport

thank you, i already sent the service request, hope it helps ASAP

is there a solution? if you have please tell because I experienced the same thing.