How to: Set up Skip Logic
Skip logic setup is entered through the Skip Logic Setup page.
This page controls the main setup where each combination of Value Class and Activity Class is linked to a number of additional settings necessary to let the system determine the skip logic.
The Value Class and the Activity Class are two settings from the world of Quality Theory that can be set on the Item level (see also the Item Quality Skip Logic Template ).
An example of the setup is:
| Value-class | Activity-class | Level | Accept | Skip | Frequency | Rejected-level | Max-interval |
|---|---|---|---|---|---|---|---|
| a | A | 1 | 2 | 3 | 1 | 6M | |
| a | A | 2 | 3 | 1 | 2 | 1 | 6M |
| a | A | 3 | 4 | 2 | 2 | 2 | 6M |
| a | A | 4 | 6 | 3 | 2 | 2 | 1Y |
In this example 4 levels of tests are created for a combination of Value Class a and Activity Class A.
For each level, a number of accepted tests is determined before the system allows this item to be moved up another level, depending on the frequency. The Skip column tells the system when and which tests can be skipped within the current level.
The frequency is the number of times a set of accepted tests must be created within the current level before the system allows a higher level. In this example, 3 sets of 2 tests = 6 tests must pass before the system moves tot he next level.
The rejected level is the level the system applies once a quality control test has failed.
The Max Interval is the time within which the checks take place. If a new quality control activity is created later than the time interval after the last activity, the system will automatically revert back to the rejected level.
Based on this example, the following rules are applied (assuming all tests pass):
Test 1 through 6 will be created and passed and the level remains 1 (accept (2) + skip (0) times frequency (3) = 6)
Test 7 will lead to a jump to level 2, test 8 and 9 will be created and passed while test 10 will be skipped (3 accepts on level 2 and then the 4th will be skipped).
We will repeat this twice on level 2, so tests 11, 12 and 13 will be created and test 14 will be skipped.
Creating test 15 will lead to a jump to level 3, where tests 16, 17 and 18 will be created as well (level 3, Accept = 4).
After that, test 19 and 20 will be skipped (level 3, first accept 4 and then skip 2).
This will be repeated again, so test 21 through 24 will be created and test 25 and 26 will be skipped.
If a test fails on level 2, the level will be set back to 1, if a test fails on level 3, the level will be set back to 2 etc.
for each of the levels, the system will check whether the last Quality Control Activity created is within the Max-Interval set on the line. If that time interval is esceeded, the level will be adjusted down as if there was a failed test.
The number of levels and the values for Accept, Skip, Frequency, Rejected Level and Max Interval are set up by the user.