HF-MES-manual/en/data_middleground/positive_direction_traceability.md

Positive Direction Traceability

1. Function Overview

Positive Direction Traceability is part of the Basic Traceability module in the MES system's Data Middle Platform. It is used to track which batteries a material is used in, as well as the processes and equipment it goes through, using Item Code + Item Batch or Semi-finished Product ID as entry points, enabling forward traceability from material to battery.

Core Features:

• Positive Direction Traceability Query: Supports querying traceability data by Item Code+Item Batch or Semi-finished Product ID
• Reverse Traceability Jump: Supports direct jump from battery barcode in traceability results to the reverse traceability page
• Data Export: Supports exporting traceability results to CSV files

Feature Screenshot:

2. Term Definitions

Term	Definition	Description
Positive Direction Traceability	Positive Direction Traceability, tracking the battery range where materials are used starting from materials	Inverse relationship with Reverse Traceability (tracking materials starting from batteries)
Item Code	Item Code, unique identification code for materials	Material master data code in the system
Item Batch	Item Batch, production batch number of materials	A batch of materials is uniquely identified by Item Code + Batch Number
Semi-finished Product ID	Semi-finished Product ID, unique identifier for semi-finished products	Can be used as traceability entry instead of Item Code+Item Batch
Battery ID	Battery ID, unique identifier for individual batteries	Granularity of traceability results, indicating which battery the material was used in

3. Positive Direction Traceability Query

3.1 Query Condition Description

Positive Direction Traceability supports two query entry points:

• Item Code + Item Batch: Exact match by item code and item batch number
• Semi-finished Product ID: Match by unique identifier of semi-finished product

[Note] If Item Code is filled, Item Batch becomes required. They must be used together.

Query Conditions:

Query Condition	Description	Required
Item Code	Query by exact item code	No
Item Batch	Query by exact item batch number	Required when Item Code is not empty
Semi-finished Product ID	Query by exact semi-finished product ID	No

Feature Screenshot:

3.2 Query Result Field Description

Query results are displayed at the battery level, where each record represents the usage of the material in a specific battery.

Field	Description
Battery ID	Unique identifier of the battery using this material
Production Batch	Production batch number to which the battery belongs
Item Name	Name of the material
Item Code	Code of the material
Item Batch	Batch number of the material
Device Code	Code of the equipment used to process the battery
Process Unit	Name of the process unit that processed the battery
Process Code	Code of the process
Completion Time	Completion time of the process

Feature Screenshot:

3.3 Query Operation Steps

1. Navigate to [Data Middle Platform] → [Basic Traceability] → [Positive Direction Traceability]
2. Enter query conditions in the query area:
   • Method 1: Enter [Item Code] and [Item Batch]
   • Method 2: Enter [Semi-finished Product ID]
3. Click [Query] button, the system displays the positive direction traceability result list

4. Reverse Traceability Jump

In the positive direction traceability result list, each battery record supports jumping to the reverse traceability page for that battery to view the complete production process from raw materials to finished products.

Operation Steps:

1. In the positive direction traceability result list, find the target battery row
2. Click the [Reverse Traceability] button in the operation column
3. The system carries the battery barcode information and jumps to the reverse traceability page

Feature Screenshot:

5. Data Export

5.1 Export Description

Positive Direction Traceability supports exporting query results to CSV files. Export uses an asynchronous task mechanism. After creating an export task, users can view progress and download files in [System Download Tasks] at the top of the system.

Export Fields:

No.	Export Field	Description
1	Battery ID	Unique battery identifier
2	Production Batch	Production batch number to which the battery belongs
3	Item Name	Material name
4	Item Code	Material code
5	Item Batch	Material batch number
6	Device Code	Equipment code
7	Process Unit	Process unit name
8	Process Code	Process code
9	Completion Time	Process completion time

5.2 Export Operation Steps

1. On the positive direction traceability page, first filter the data to be exported using query conditions
2. Click the [Export] button above the table
3. The system pops up a confirmation dialog prompting "Data export requires creating a download task first"
4. Click [OK] to confirm creating the download task
5. The system prompts "Download task created successfully" and automatically jumps to the [System Download Tasks] page
6. Wait for the task to complete on the download task page, then click download to obtain the CSV file

[Note] If no data is queried currently, the export will prompt "No download data available, cannot create download task".

Feature Screenshot:

6. Related Functions

Function	Relationship	Description
Reverse Traceability	Inverse Relationship	Tracks materials used from battery barcode, forming a complete bidirectional traceability link with positive direction traceability
System Download Tasks	Export Dependency	Export results from positive direction traceability are managed and downloaded uniformly through system download tasks