How To Fix AD391 - Output length for data type & is set to at least &

SAP Error Message - Details

• Message type: E = Error

• Message class: AD - Data Dictionary application messages

• Message number: 391

• Message text: Output length for data type & is set to at least &

What causes this issue?

Certain data types have a fixed minimum length. The output length is
composed of the length of the data type and the formatting characters
required and, thus, also has a minimum value.
You have entered an output length that falls below the minimum output
length for the data type you have selected.

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?

Use the minimum output length specified. You may need to check that you
are using the correct data type. Press F4 or F1 on the field <LS>Data
type</> in the domain maintenance function to obtain an overview of
allowed data types or a brief description of the data types.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AD391 - Output length for data type & is set to at least & ?

  The SAP error message AD391 indicates that there is an issue with the output length of a data type in your ABAP program or data dictionary. Specifically, it means that the output length for a certain data type is set to a value that is not compatible with the expected length for that data type.
  
  Cause:
  
  Data Type Mismatch: The output length defined for a data type is either too short or incorrectly defined, leading to a mismatch when the program tries to process or display data.
  Field Length Exceeded: The program is trying to output a value that exceeds the defined length of the field in the data dictionary.
  Incorrect Data Dictionary Definition: The data element or structure may have been incorrectly defined in the data dictionary (SE11).
  
  
  Solution:
  
  
  Check Data Dictionary Definitions:
  
  Go to transaction SE11 and check the data element or structure associated with the data type mentioned in the error message.
  Ensure that the