How To Fix VMP_MSG306 - BOM &1 has been linked with Document &2

SAP Error Message - Details

• Message type: E = Error

• Message class: VMP_MSG - VMP Message Manager

• Message number: 306

• Message text: BOM &1 has been linked with Document &2

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message VMP_MSG306 - BOM &1 has been linked with Document &2 ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  VMP_MSG306: BOM &1 has been linked with Document &2
  
  Cause:
  This message occurs when you try to link or assign a Bill of Materials (BOM) to a document (such as a routing, production order, or another master data object), but the BOM is already linked to another document. SAP prevents multiple linkages of the same BOM to different documents in certain contexts to maintain data consistency and avoid conflicts.
  In other words, the BOM number (&1) you are trying to assign is already linked to another document (&2), and the system does not allow this duplicate linkage.
  
  Explanation:
  
  BOM (Bill of Materials): A structured list of components or materials required to produce a product.
  Document: Could be a routing, production order, or other master data object that references the BOM.
  The system enforces a one-to-one or controlled relationship between BOMs and documents depending on the configuration and business process.
  
  
  Solution:
  
  
  Check Existing Linkage:
  
  Identify the document (&2) to which the BOM (&1) is already linked. You can do this by:
  
  Using transaction codes like CS03 (Display BOM) or CA03 (Display Routing) to check BOM assignments.
  Checking tables such as STPO (BOM items) or MAPL (Assignment of task lists to materials).
  
  
  
  Decide on Action:  
  
  If the existing linkage is correct and should not be changed, do not attempt to link the BOM again.
  If you need to link the BOM to a different document, you may need to:
  
  Remove the existing linkage first (if business process allows).
  Create a new BOM for the new document.
  Adjust your process to avoid multiple linkages.
  
  
  
  
  
  Adjust Master Data:  
  
  If the BOM is shared intentionally, consider whether your process or configuration supports shared BOMs.
  Sometimes, creating alternative BOMs or versions is the recommended approach.
  
  
  
  Consult Configuration:  
  
  Check if your system configuration or custom enhancements enforce this restriction.
  In some cases, this behavior can be influenced by settings in the Logistics or Production modules.
  
  
  
  
  Related Information:
  
  
  Transactions:  
  
  CS01: Create BOM  
  CS02: Change BOM  
  CS03: Display BOM  
  CA01/CA02/CA03: Create/Change/Display Routing  
  CO01: Create Production Order
  
  
  
  Tables:  
  
  STPO: BOM items  
  MAPL: Assignment of task lists to materials  
  STPOZ: BOM item assignments
  
  
  
  Notes and Documentation:  
  
  Check SAP Notes related to BOM and routing linkage issues.  
  Review SAP Help Portal documentation on BOM management and production master data.
  
  
  
  
  Summary:
  The error VMP_MSG306 indicates that the BOM you are trying to link is already linked to another document. To resolve it, verify the existing linkage, decide if you need to unlink or create a new BOM, and adjust your master data or process accordingly.
  
  If you provide the exact transaction or scenario where this error occurs, I can help with more specific steps.