How To Fix IO304 - Only &2 serial numbers entered instead of &1

SAP Error Message - Details

• Message type: E = Error

• Message class: IO - Plant Maintenance: Object List

• Message number: 304

• Message text: Only &2 serial numbers entered instead of &1

What causes this issue?

There is a serial number obligation, so the number of
<DS:GLOS.serial_number>serial numbers</> must equal the number of serial
numbers in the <DS:GLOS.material_document>material document</>.
You can post the operation only if you entered the correct number of
serial numbers previously.

System Response

Depending on the context in which the error arises, the system continues
processing, or the required function cannot be
performed.

How to fix this error?

You have the following options, for example:

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

Check that the serial numbers are entered fully.
If necessary, display an error log.
If necessary, contact your system administrator.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message IO304 - Only &2 serial numbers entered instead of &1 ?

  The SAP error message IO304 indicates that there is a mismatch between the number of serial numbers that were expected and the number that were actually entered. Specifically, the message states that only a certain number of serial numbers (represented by &2) were entered when the system expected a different number (represented by &1).
  
  Cause:
  This error typically occurs in scenarios where serial number management is involved, such as during goods movements, inventory management, or when processing deliveries. The mismatch can happen due to several reasons:
  
  Incorrect Data Entry: The user may have entered fewer serial numbers than required.
  System Configuration: The system may be configured to expect a certain number of serial numbers based on the material master or other settings.
  Batch Processing: If the operation involves batch processing, the system might expect a specific number of serial numbers based on the batch size.
  Incomplete Transactions: The transaction may not have been completed properly, leading