How are Tolerances for Invoice verification defined?

The following are instances of tolerances that can be defined for Logistic
Invoice Verification.
c. Small Differences
d. Moving Average Price variances
e. Quantity variances
f. Price variances
Based on the client requirement, the transaction can be “Blocked” or
Posted with a “Warning” in the event of the Tolerances being exceeded.
Tolerances are nothing but the differences between invoice amount and
payment amount or differences between goods receipt amount and
invoice amount which is acceptable to the client.