### Navigation

- index
- modules
- toc
- next
- previous
- PSI4 [beta5] »
- Appendices »
- Keywords by Module »
- SAPT »

# OCC_TOLERANCE

> Minimum occupation (eigenvalues of the MP2 OPDM) below which virtual natural orbitals are discarded for in each of the above three truncations

> - Type: conv double
> - Default: 1.0e-6

### Navigation

- index
- modules
- toc
- next
- previous
- PSI4 [beta5] »
- Appendices »
- Keywords by Module »
- SAPT »