The purpose of this document is to define the conversion approach to create Bill of Material in S/4 HANA.
Summarise how the data is currently utilized and set up in the legacy system/s and how object is intended to be represented in S/4, and any other relevant information
The scope of this document covers the approach for converting active Bill of Material from Legacy Source Systems into S/4HANA following the Bill of Material Master Data Design Standard.
A Bill of Materials (BOM) is a structured list of components, spare parts, or assemblies required for maintenance activities on technical objects like equipment or functional locations. It helps streamline maintenance planning, spare parts procurement, and work order execution.
The data from legacy system includes:
The data from legacy system excludes:
For further explanation, a Material BOM for relevant Assembly excludes BOM Assembly Header that are not assigned to Functional Location, Equipment or Task List.
| Source | Scope | Source Approx No. of Records | Target System | Target Approx No. of Records |
|---|---|---|---|---|
PF2, WP2 | Bill of Materials will be extracted from PF2 and WP2 | 330,000 | S/4 HANA | 330,000 |
| DCT | Bill of Materials for plants which do not have data existing from PF2 and PF2 | nnn | S/4HANA | nnn |
BOM header description will be retrieved from PM Assembly description. Alternate language availability will depend on PM Assembly alternate language.
Not Applicable
Not Applicable
With Functional input, document the technical design of the target fields that are in the scope of this document.
The technical design of the target for this conversion approach.
| Table | Field | Data Element | Field Description | Data Type | Length | Requirement |
|---|---|---|---|---|---|---|
| MARA | MATNR | MATNR | Material Number | CHAR | 18 | Mandatory |
All data cleansing should take place in the data source system as defined in this document, unless system limitations prevent it.
If data cleansing is managed outside of the source system (e.g. Syniti Migrate, 3rd Party Vendor, DCT), the necessary documentation must be produced and appended to this deliverable for sign-off.
| ID | Criticality | Error Message/Report Description | Rule | Output | Source System |
|---|---|---|---|---|---|
| 1001-001 | C1 | Invalid, Inactive or no Component linked to Bill of Material | Bill lof Material as per Relevancy Criteria within a plant assigned with a Component which does not belong below: 1. Material Master (S2P) as per Relevancy Criteria within the same plant as BOM | Material | PF2/WP2 |
| 1001-002 | C1 | Invalid or Inactive Document Info Record linked to Bill of Material | Bill lof Material as per Relevancy Criteria assigned with a Document Info Record which does not belong below: 1. Document Info Record as per Relevancy Criteria | Document Info Record | PF2/WP2 |
| 1001-003 | C1 | BOM Base Unit of Measure Missing / incorrect. | BOM Base Unit of Measure as per Relevancy Criteria with no UoM Assigned or Invalid UoM (T006) | Unit of Measure | PF2/WP2 |
| 1001-004 | C1 | BOM Component UOM Missing / incorrect. | Bill lof Material Component as per Relevancy Criteria with no UoM Assigned or Invalid UoM (T006) | Unit of Measure | PF2/WP2 |
| 1001-005 | C2 | BOM Component Quantity is Zero or Negative. | Bill lof Material Component as per Relevancy Criteria with Value <= 0. | Component Quantity | PF2/WP2 |
| 1001-006 | C1 | Functional Location or Equipment BOM not used for Plant Maintenance | Bill of Material with below BOM Equipment (E) and Functional Location (T) BOM Categories and with no Deletion Indicator but are not used in Plant Maintenance*. * BOM Usage (4) - Plant Maintenance in MAST, EQST, TPST | BOM Category, Usage | PF2/WP2 |
| 1001-007 | C1 | BOM with Plant Maintenance Usage but not used by Materials, Equipment or Functional Location | BOM as per Relevancy Criteria however not assigned to below: 1. Materials as per Relevancy Criteria 2. Equipment as per Relevancy Criteria 3. Functional Location as per Relevancy Criteria | BOM Category, Usage | PF2/WP2 |
| 1001-008 | C1 | BOM (PM Assemblies) without BOM Components. | Bill lof Material Component as per Relevancy Criteria with 0 Components assigned. | BOM Component | PF2/WP2 |
| 1001-009 | C1 | BOM Plant incorrect. | BOM as per Relevancy Criteria with Invalid Plants (T001W) | Plant | PF2/WP2 |
| 1001-010 | C1 | BOM Language Key incorrect. | BOM as per Relevancy Criteria with Invalid Language Key (T001) | Language Key | PF2/WP2 |
| 1001-011 | C1 | BOM Laboratory/office for material incorrect. | BOM as per Relevancy Criteria with Invalid Laboratory/office for material (T024L) | Laboratory/office for material | PF2/WP2 |
| 1001-012 | C1 | BOM Bill of Material Status incorrect. | BOM as per Relevancy Criteria with Invalid XXXX (T415S) | Bill of Material Status | PF2/WP2 |
| 1001-012 | C2 | BOM with empty Plan | BOM with empty plants to be updated with plants, or else they will not be migrated | Bill of Material Plant | PF2/WP2 |
The high-level process is represented by the diagrams below.
The following represents the high-level process for Source System Extraction:

The following represents the high-level process for DCT:

Extract data from a source into Syniti Migrate. There are 2 possibilities:
The agreed Relevancy criteria is applied to the extracted records to identify the records that are applicable for the Target loads
| Req # | Requirement Description | Team Responsible |
|---|---|---|
| 1 | Extract data from source system based on relevancy rule | Data Team |
| 2 | Google Sheet report pre-populated with PF2 and WP2 information to be generated based on relevancy criteria. | Data Team |
| Selection Ref Screen | Parameter Name | Selection Type | Requirement | Value to be entered/set |
|---|---|---|---|---|
| Not Applicable | ||||
<Object> DCT Rules
| Field Name | Field Description | Rule |
|---|---|---|
List the steps that need to occur before extraction can commence
| Item # | Step Description | Team Responsible |
|---|---|---|
| 1 | Only BOM linked to relevant Functional Location should be extracted. | Data Team |
| 2 | Only BOM linked to relevant Equipment should be extracted. | Data Team |
| 3 | Only BOM linked to relevant Assembly should be extracted. | Data Team |
The Target fields are mapped to the applicable Legacy field that will be its source, this is a 3-way activity involving the Business, Functional team and Data team. This identifies the transformation activity required to allow Syniti Migrate to make the data Target ready:
| Item # | Step Description | Team Responsible |
|---|---|---|
1 | Ensure all mapping tables are up to date. | Syniti |
2 | In dspMigrate, select the wave –R3 S4/HANA – Plant Maintenance | Syniti |
3 | Go to Process Area Launch and Process the Object – BOM | Syniti |
4 | Review and Validate Error and Preload Reports | Syniti |
5 | Execute the transformation to prepare the target tables | Syniti |
6 | Validate data from pre-load and invalid reports by region | Business/Data owner |
7 | Generate export(load) file (If load tool is not dspIntergrate) | Data Team |
Transformation Rules
| Rule # | Source system | Source Table | Source Field | Source Description | Target System | Target Table | Target Field | Target Description | Transformation Logic |
|---|---|---|---|---|---|---|---|---|---|
| Mapping Table Name | Mapping Table Description |
|---|---|
| Item # | Step Description | Team Responsible |
|---|---|---|
| Task | Action |
|---|---|
Verify Record Count | Data team to verify that the total number of relevant records from the source systems is equal to the total number of records in the Preload and Load Sheets. |
| Task | Action |
|---|---|
Conversion Accuracy | Data team to verify that all fields below meet pass the checks: 1. Mandatory Fields 2. Field and Value Mapping Correctness 3. Null Checks 4. Text Length Checks |
Review error reports | Review and correct the errors. Achieve a zero-error record count as much as possible. Raise defects for data remediated and requiring a correction in the source data. |
| Task | Action |
|---|---|
Verify Record Count | Business team to verify that the total number of relevant records from the source systems is equal to the total number of records in the Preload and Load Sheets. |
| Task | Action |
|---|---|
Conversion Accuracy | Business to verify that all the data in the load table/file is accurate as per endorsed transformation/mapping rules (and signed-off data) |
The load process includes:
| Item # | Step Description | Team Responsible |
|---|---|---|
Load Phase and Dependencies
Pre-Cutover
List the Configurations required before loading can commence
| Item # | Configuration Item |
|---|---|
| 1 | T001W-Plants/Branches |
| 2 | T006-Units of Measurement |
| 3 | T415S-Bill of Material Status |
| Object # | Preceding Object Conversion Approach |
|---|---|
| 1003 | Functional Location |
| 1002 | Equipment |
| 2010 | Material - General Plant Data / SLoc Data |
| 1010 | Construction Type |
The table below depicts some possible system errors for this data object during data load. All data load error is to be logged as defect and managed within the Defect Management
| Error Type | Error Description | Action Taken |
|---|---|---|
| Task | Action |
|---|---|
Verify Count | Data team to verify the record count created in target S/4 HANA by accessing post load reports in dspMigrate or standard reports from S/4 HANA. |
Verify Logs | Check if there is data that failed to load and perform the necessary actions (e.g. register as post load issue, or attempt to load the record again, etc.). |
| Task | Action |
|---|---|
Conversion Accuracy | Data team to verify that the Measuring Point data in target S/4 HANA were loaded correctly via dspMigrate post load reports or standard reports from S/4 HANA. |
| Task | Action |
|---|---|
Verify Count | Download Post Load Reports from dspMigrate and verify that the record count loaded in the target S/4 HANA is the same count as of the endorsed load file. |
| Task | Action |
|---|---|
Conversion Accuracy | Verify that the Measuring Point data in target S/4 HANA were loaded correctly via dspMigrate post load reports or standard reports from S/4 HANA. |
Data cleansing has met the required percentage threshold for the specified mock cycle and all preparation activities have been completed.
Any additional key assumptions.
Insert links and references to other documents which are relevant when trying to understand this decision and its implications. Other decisions are often impacted, so it's good to list them here with links. Attachments are also possible but dangerous as they are static documents and not updated by their authors.