How To Fix MD429 - &1: &2 (U6)

SAP Error Message - Details

• Message type: E = Error

• Message class: MD - Material Requirements Planning (MRP)

• Message number: 429

• Message text: &1: &2 (U6)

What causes this issue?

In the individual segment (make-to-order planning, individual project
planning, or direct production or direct procurement), the total of
stock and receipts is greater than the requirements.
The reason for this is, for example, that the sales order quantity has
been reduced.

System Response

The exception message is set by the system as follows:
If stock alone is greater than the requirements in the individual
segment, the exception is displayed in the stock line.
If receipts are scheduled, the exception message is displayed for the
receipts that lie furthest in the future. Here, an exception message is
given to all receipts whose quantities (also partially) exceed the
requirements quantity.
On the details screen for the receipts, the system also displays the
required quantity, not needed to cover the requirement.
The exception message is displayed in the MRP list and in the
stock/requirements list.

How to fix this error?

Either the stock is to be reduced by stock transfer or the receipts
should be reduced.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MD429 - &1: &2 (U6) ?

  The SAP error message MD429 typically indicates an issue related to the availability of materials in the context of demand management or production planning. The message format you provided suggests that it is a specific error related to the availability check for a material.
  Cause:
  The error message MD429 usually occurs due to one of the following reasons:
  
  Insufficient Stock: The system cannot find enough stock of the material to fulfill the demand.
  Incorrect Configuration: The material master or the configuration settings for the availability check may not be set up correctly.
  Planning Parameters: The planning parameters for the material may not be correctly defined, leading to issues in availability checks.
  Sales Order or Production Order Issues: There may be issues with the sales orders or production orders that are linked to the material.
  
  Solution:
  To resolve the MD429 error, you can take the following steps:
  
  Check Stock Levels: Verify the stock levels of the material in question. Use transaction codes like MMBE (Stock Overview) to check the available stock.
  Review Material Master Data: Ensure that the material master data is correctly configured. Check the availability check settings in the material master (transaction code MM02).
  Check Planning Parameters: Review the planning parameters for the material. Ensure that the lot size, safety stock, and other relevant parameters are set correctly.
  Analyze Demand: Look at the demand for the material. If there are unexpected spikes in demand, consider adjusting the planning or procurement strategies.
  Check Open Orders: Review any open sales orders or production orders that may be consuming the available stock. Use transaction codes like VA05 (List of Sales Orders) or CO03 (Display Production Order) to check for open orders.
  Run MRP: If necessary, run the Material Requirements Planning (MRP) process to generate procurement proposals for the material.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MMBE, MM02, MD04 (Stock/Requirements List), and MD01 (MRP Run).
  SAP Notes: Check for any SAP Notes related to the MD429 error for specific patches or updates that may address known issues.
  Documentation: Review SAP documentation or help files for more detailed information on availability checks and material planning.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or refer to SAP community forums for additional insights.