&1 (NO_INITIAL_AL)

What causes this issue?

For IDocs created in non-Unicode format, when using a multi-byte code
page, fields with no data are converted into initial values.

System Response

The problem occurs in Unicode systems only when using ?old? segments. Up
to Release 3.1I segment DDIC structures (transaction SE11) were
generated using data elements. If the type of these data elements is
DATS, TIMS, NUMC, or ACCP, empty data is converted into initial values
if an alignment correction is necessary. Segment structures of higher
releases are created without data elements and only using the CHAR data
type. Accordingly, this problem does not arise for these structures.

How to fix this error?

Set this indicator if you want to suppress this conversion.

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.