Here you can define whether adjustments that are executed with this rule only go in a particular direction (only increases or only reductions of the amount).
Example
In an adjustment rule that is used for two contracts, the indicator is set to "1 - only increases allowed". The current condition amount is 500 for both contracts. The system makes the adjustment (for example, according to the representative list of rents). For the first contract, a new rent of 520 results; for the second contract the new rent is 490. Since you specified that the system can only execute increases, it does not perform any adjustment for the second contract. The contract appears in the adjustment list with the status 'Errors in Calculation'. The log contains the information that for this contract the adjustment could not be carried out, because the adjustment rule only allows amounts to be increased.