How To Fix WRF_WSUBST038 - Quantity determination not possible; original material &1, unit &2

WRF_WSUBST038 - Overview

• Message type: E = Error

• Message class: WRF_WSUBST - Article Substitution: Messages Central Determination Logic

• Message number: 038

• Message text: Quantity determination not possible; original material &1, unit &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 WRF_WSUBST038 - Quantity determination not possible; original material &1, unit &2 ?

  The SAP error message WRF_WSUBST038 indicates that the system is unable to determine the quantity for a specific material in a given unit of measure. This error typically arises in the context of SAP's Advanced Planning and Optimization (APO) or in the context of materials management and inventory control.
  Causes:
  
  Missing Master Data: The material master data for the specified material may be incomplete or missing. This includes data related to units of measure, conversion factors, or other relevant attributes.
  Incorrect Unit of Measure: The unit of measure specified may not be valid for the material in question. For example, if the material is defined in pieces but the system is trying to process it in kilograms, this could lead to the error.
  
  Configuration Issues: There may be configuration issues in the system related to how quantities are determined for materials, especially if custom logic or enhancements are involved.
  Stock Availability: The system may not