How To Fix VH142 - Source and target unit of measurement are assigned to differnet materials

SAP Error Message - Details

• Message type: E = Error

• Message class: VH - SD pricing

• Message number: 142

• Message text: Source and target unit of measurement are assigned to differnet materials

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message VH142 - Source and target unit of measurement are assigned to differnet materials ?

  SAP Error Message:
  
  VH142 - Source and target unit of measurement are assigned to different materials
  
  Cause:
  This error occurs when you try to perform a transaction (such as a goods movement, conversion, or transfer) involving two materials, but the source unit of measurement (UoM) assigned to the source material differs from the target unit of measurement assigned to the target material. Essentially, the system detects a mismatch in the units of measure between the materials involved in the process.
  For example, if you are trying to convert or transfer quantities between two materials and the source material is maintained with a base unit of "KG" while the target material is maintained with a base unit of "PC" (pieces), SAP will raise this error because it cannot reconcile the difference automatically.
  
  When does it typically occur?
  
  During stock transfer or conversion between materials.
  When using material-to-material conversion or substitution.
  In production or inventory processes where materials with different UoMs are involved.
  When creating or processing transfer postings or reservations involving different materials.
  
  
  Solution:
  
  
  Check Material Master Data:
  
  Go to transaction MM03 (Display Material).
  Verify the Base Unit of Measure for both the source and target materials.
  Ensure that the units of measure are consistent or compatible for the intended transaction.
  
  
  
  Adjust Units of Measure:
  
  If the business process requires conversion between different units, ensure that the conversion factors are properly maintained in the material master or in the unit of measure conversion tables.
  If the materials are supposed to be the same or similar, consider aligning their base units of measure.
  
  
  
  Use Correct Materials:
  
  Confirm that the correct materials are being used in the transaction.
  Sometimes, the wrong material number might be entered, leading to unit of measure mismatches.
  
  
  
  Maintain Unit of Measure Conversions:
  
  If conversion between units is necessary, maintain the conversion factors in transaction CUNI or in the material master under the Additional Data tab.
  This allows SAP to convert quantities between different units.
  
  
  
  Review Business Process:
  
  If the process inherently involves different materials with different units, consider whether the process should be handled differently (e.g., using a BOM, production order, or separate stock postings).
  
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  MM03 - Display Material Master
  MM02 - Change Material Master (to adjust UoM if needed)
  CUNI - Units of Measure (to maintain conversion factors)
  MB1B / MIGO - Goods Movement (where the error might appear)
  
  
  
  SAP Notes and Documentation:
  
  Check SAP OSS notes related to unit of measure errors.
  Review SAP Help Portal documentation on material master and units of measure.
  
  
  
  Best Practices:
  
  Always maintain consistent units of measure for materials that are interchangeable or involved in conversions.
  Use base unit of measure carefully and maintain alternative units with proper conversion factors.
  Validate material master data during master data creation or change to avoid such errors during transactions.
  
  
  
  
  Summary:
  Error VH142 arises because the source and target materials have different units of measure assigned, which SAP cannot reconcile automatically. The solution is to verify and align the units of measure in the material master or maintain proper conversion factors to enable the system to handle the difference correctly.