How To Fix QY309 - Total size of all material samples is greater than the lot size

SAP Error Message - Details

• Message type: E = Error

• Message class: QY - QM: Sample management

• Message number: 309

• Message text: Total size of all material samples is greater than the lot size

What causes this issue?

The total quantity of all primary samples calculated by the system is
greater than the inspection lot quantity.
This problem can only occur if:
The system uses several sample-drawing items in the sample-drawing
procedure to calculate the material samples.
The sum of the primary samples for <ZH>one</> sample-drawing item are
smaller than the lot quantity, but the sum of the primary samples for
<ZH>all</> sample-drawing items are greater than the lot quantity.
If the system finds only one sample-drawing item to calculate the
samples and it determines that the total quantity of the samples for the
sample-drawing item exceeds the lot quantity, it reduces the number of
samples to a single primary sample. The system defines the size of the
primary sample to match the inspection lot quantity.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Make sure a valid task list exists for the material. The task list must
have a sample-drawing procedure assigned to it, which has only one
applicable sample-drawing item.
If the <ZH>inspection lot was created automatically</>, you can use the
transaction to change an inspection lot to retrigger the inspection
sample and material sample calculation. You must select an appropriate
inspection plan for the inspection lot as described above.
If you are <ZH>creating the inspection lot manually</>, save the
inspection lot before you call up the function to change the inspection
lot as described in the item above (automatic inspection lot creation).

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message QY309 - Total size of all material samples is greater than the lot size ?

  The SAP error message QY309 indicates that the total size of all material samples exceeds the specified lot size during a quality inspection process. This error typically occurs in the context of quality management (QM) when you are trying to create or process inspection lots.
  Cause:
  
  Sample Size Configuration: The sample size defined for the inspection lot is larger than the total quantity of the lot itself. This can happen if the sampling procedure is set incorrectly or if the lot size is smaller than expected.
  Incorrect Lot Size: The lot size may have been defined incorrectly during the creation of the inspection lot.
  Sampling Procedure: The sampling procedure used may require a larger sample size than what is available in the lot.
  
  Solution:
  
  Review Sampling Procedure: Check the sampling procedure assigned to the inspection lot. Ensure that it is appropriate for the lot size and that it does not require an excessive sample size.
  Adjust Lot Size: If the lot size is indeed too small for the required sample size, consider adjusting the lot size if possible. This may involve re-evaluating the production or delivery quantities.
  Modify Sample Size: If the sampling procedure is correct but the sample size is too large, you may need to modify the sample size settings in the quality management configuration.
  Consult Documentation: Review SAP documentation or consult with your SAP QM module expert to ensure that the sampling procedures and lot sizes are configured correctly.
  Use Alternative Sampling Methods: If the current sampling method is not suitable, consider using a different sampling method that aligns better with the lot size.
  
  Related Information:
  
  Quality Management (QM) Module: This error is related to the QM module in SAP, which deals with quality planning, quality inspection, and quality control.
  Sampling Procedures: Familiarize yourself with the different sampling procedures available in SAP and how they are configured.
  Lot Size Definitions: Understand how lot sizes are defined in your SAP system and the implications of these definitions on quality inspections.
  SAP Notes and Support: Check SAP Notes for any known issues or updates related to this error message. You can also reach out to SAP support for assistance if needed.
  
  By addressing the underlying cause of the error, you can resolve the issue and proceed with the quality inspection process.