ASSIGN_OFF+LENGTH_ILLEGAL_CAST SAP ABAP Runtime Error assign off+length illegal cast

ASSIGN_OFF+LENGTH_ILLEGAL_CAST is an ABAP runtime error which you may come across when using or developing within an SAP system. See below for the standard details explaining what it means and how you can avoid or fix this runtime error.

Short Dump Classification: A - ABAP Programming Error

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ASSIGN_OFF+LENGTH_ILLEGAL_CAST ABAP Runtime Error

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Error in ASSIGN f+offset(length) in program <runtime parameter>. Please see abap error for more details about the possible cause of this runtime error and how it could be avoided.

The error occurred with one of the following statements:

(1) ASSIGN f+offset(length) TO ... RANGE r.

(2) ASSIGN +offset(length) TO ... .

This error only occurs in programs with active Unicode checks. The target area addressed by offset and length is not completely in the source field. Part or all of it is in the explicitly specified range r. The addressed target area contains deep components (data references, object references, strings, internal tables). These deep components must not be overwritten (and thus invalidated) as this would cause runtime errors to occur (STRING_BAD_REF for example) upon subsequent read access.

offset : <runtime parameter>
length : <runtime parameter>
Length of the source field : <runtime parameter> Please see abap error for more details about the possible cause of this runtime error and how it could be avoided.