How To Fix AQ894 - Blank unit field found

AQ894 - Overview

• 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