# Cycle Status

Data Stream uses a precedence algorithm to control and enforce proper data streams throughout. 

{% hint style="warning" %}
In order for a cycle status to be updated, the new cycle status must have a higher precedence than the previous status.
{% endhint %}

| Code | Name       | Description                                                                                                     | Precedence |
| ---- | ---------- | --------------------------------------------------------------------------------------------------------------- | :--------: |
| E    | Empty      | Empty is reserved for system use and occurs when a data stream is missing both a serial number and part number. |      0     |
| T    | In-Transit | In-Transit is reserved for system use and occurs when a data stream has both a serial number and part number.   |      1     |
| I    | In-Process | In-Process is reserved for system use and occurs when a data stream is missing both accept and reject signals.  |      2     |
| A    | Accept     | Accept occurs when a data stream has an accept and not a reject signal.                                         |      3     |
| X    | Reject     | Reject occurs when a data stream has a reject signal.                                                           |      4     |
| R    | Repair     | Repair is reserved for Teardown use and occurs when an operator completes the repair process.                   |      5     |
| S    | Scrap      | Scrap is reserved for Teardown use and occurs when an operation completes the scrap process.                    |      6     |