Overflow error: '&1' could not be moved

What causes this issue?

During OBJKN conversion a number >2147483647 (max signed int4) was tried
to fill into a int4 field.

System Response

Overflow error: '&V1&' could not be moved

How to fix this error?

The field which should contain OBJKNR does not support value from source
field.
Issue could raise if a number from a int8 field is copied to a int4
field and value is >2147483647 (max signed int4).
There should be a *_LONG field which contain the correct value.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.