How To Fix AQ894 - Blank unit field found

SAP Error Message - Details

• Message type: E = Error

• Message class: AQ - Message texts for SAP Query

• Message number: 894

• Message text: Blank unit field found

What causes this issue?

Your query includes currency amount fields or quantity fields. Each
currency amount field and quantity field has a reference field (a
currency key field or unit field) containing the relevant currency or
unit. On reading one of the currency amount or quantity fields, the
system discovered that the relevant unit field contained no value
(SPACE). This indicates that the reference fields have not been
properly maintained in the InfoSet used to create the query.
If the reference fields are not maintained, ABAP/4 Query is unable to
distinguish between different currencies or units and therefore does
not work correctly when calculating totals.

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?

Check the InfoSet. In the case of InfoSets which use logical databases,
this error should not occur because the database program has to ensure
that reference fields always contain the correct values.
With InfoSets which do not use logical databases, you may have to use
record processing code to ensure that the reference fields of the
selected currency amount and unit fields contain the correct values.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AQ894 - Blank unit field found ?

  The SAP error message AQ894, which states "Blank unit field found," typically occurs in the context of the SAP Advanced Planning and Optimization (APO) module or during the processing of certain transactions where unit of measure (UoM) is required. This error indicates that a required field for the unit of measure is empty or not properly filled in.
  Cause:
  
  Missing Unit of Measure: The most common cause is that the unit of measure field is left blank in a relevant transaction or master data record.
  Incorrect Configuration: There may be issues with the configuration of the material master or the relevant planning object.
  Data Transfer Issues: If data is being transferred from another system or module, it may not have been mapped correctly, leading to missing values.
  User Input Error: Users may inadvertently skip entering the unit of measure when creating or updating records.
  
  Solution:
  
  Check the Transaction: Review the transaction where the error occurred. Ensure that all required fields, especially the unit of measure, are filled in correctly.
  Review Master Data: Go to the material master or relevant master data records and check if the unit of measure is defined. If it is missing, add the appropriate unit of measure.
  Configuration Review: If the issue persists, check the configuration settings in the SAP system related to units of measure. Ensure that the necessary settings are in place for the materials or products being processed.
  Data Validation: If data is being imported or transferred, validate the data to ensure that all required fields are populated correctly before the transfer.
  User Training: Provide training to users on the importance of filling in all required fields, including the unit of measure, to prevent this error from occurring in the future.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific patches or updates related to this error message. SAP frequently releases notes that address known issues.
  Documentation: Refer to SAP documentation for guidelines on handling units of measure and related master data management.
  Support: If the issue cannot be resolved through the above steps, consider reaching out to SAP support for further assistance.
  
  By following these steps, you should be able to identify the cause of the AQ894 error and implement a solution to resolve it.