Question
What is the decimal precision of TM1?
Answer
TM1 stores data in IEEE-754 Floating Point Double.
The maximum number of digits is 15+ (almost 16, but some 16 digit number will not fit with full precision).
TM1 will clip to 14 digits for display.
By default Architect will display 9 digits of precision after the decimal point. This can be modified by by defining a custom format for the cell. Of course, the same overall 15 digit limit still applies. If one has 10 digits to the left of the decimal point, there will be only 5 digits to the right.