ROUND_RULE is a fixed lexicon which is used to determine how many decimal points should be used when rounding an amount.
X_ROUND_RULE is a fixed lexicon with the following values:
| Saved Value | Displayed Value |
|---|---|
| 00 | No decimals |
| 01 | 1 decimal |
| 02 | 2 decimals |
| 03 | 3 decimals |
| 04 | 4 decimals |
