If you create or change an inspection plan, the system cannot automatically check all dependencies between:
- Inspection plan headers and inspection characteristics
- Operations and inspection characteristics
- Different inspection characteristics
- Inspection characteristics and production resources/tools
- Dependent characteristic specifications and inspection characteristics
- Dependent characteristic specifications and production resources/tools
- Dependent characteristic specifications and material/task list assignments
As a result, when you are creating or editing an inspection plan, inconsistencies can occur. Such inconsistencies can in certain circumstances only be removed at a later date, once the production sequence is fixed. For this reason, you can specify when certain consistency checks are to be performed.
The system performs a consistency check in regard to QM-specific data for the selected (or all) task list headers. The check is performed on a key date.
During the task list check, the system checks the consistency of the following elements and issues error messages (inconsistency causes problems during inspection processing), warning messages (inconsistency can cause problems in inspection processing), or information messages (inconsistency does not require direct handling). There is detailed information about these messages in the message long text of the log.
Examples of inconsistencies:
- The indicator for inspection characteristics is set in the control key of an operation; however, no inspection characteristics exist for this operation.
- The indicator for inspection characteristics is not set in the control key of an operation; however, inspection characteristics exist for this operation.
- No inspection point type has been entered in the chosen sampling procedure, although the inspection plan specifies an inspection with inspection points.
- Inspection points have been entered in the inspection plan header, although neither time nor quantity has been specified in the inspection operation.
- Results recording by unit to be inspected has been defined in the inspection operation. No inspection characteristics with single-value recording or without dependent multiple samples have been included in the inspection plan.
- The unit of measure for the sample cannot be converted into the base unit of measure for the material.
The system performs the consistency check on the key date.
- Inspection Characteristics
Examples of inconsistencies:
- The formula is incorrect. As a result, automatic value calculation is not possible.
- Calculated characteristics reference invalid characteristics.
- There is no required characteristic as a leading characteristic for at least one conditional characteristic.
- Leading characteristics are assigned to other leading characteristics.
- The inspection characteristic references a production resource/tool that has been deleted in the meantime.
- The dynamic modification criteria defined at inspection characteristic level cannot be used for the chosen inspection plan usage.
- A master inspection characteristic or class characteristic appears repeatedly.
- Although automatic defects recording is defined, no defect code has been defined in an inspection characteristic.
- Sample processing using inspection points has been defined in the inspection plan header. As a result, the long text for the sample-drawing procedure is overridden by the text from the inspection plan header, or the units of measure for the sample and partial samples do not correspond.
- Dependent Characteristic Specifications
Examples of inconsistencies:
- Dependent characteristic specifications reference invalid material/plan assignments
- Data from dependent characteristic specifications are inconsistent with control indicators from the inspection characteristics.
- The assigned production resource/tool was deleted in the meantime.