How To Fix RSDS100 - &1: Explicit external length is less than implicit external length

RSDS100 - Overview

• Message type: E = Error

• Message class: RSDS - New DataSource

• Message number: 100

• Message text: &1: Explicit external length is less than implicit external length

What causes this issue?

You specified an <LS>output length</> (external length) &V3&, for field
&V1& segment &V2&. The external length of the field implicitly
calculated by the system, however, is &V4&.

System Response

The system ignores the external length that you specified.

How to fix this error?

Either shorten the technical length of the field (<LS>length</> field),
increase the output length, or delete the explicit value that you
entered for the output length.

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.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSDS100 - &1: Explicit external length is less than implicit external length ?

  The SAP error message RSDS100 with the description "Explicit external length is less than implicit external length" typically occurs in the context of data extraction or data transfer processes, particularly when dealing with DataSources in SAP BW (Business Warehouse) or when working with ABAP programs that involve data structures.
  
  Cause:
  This error arises when there is a mismatch between the defined lengths of fields in the data structure. Specifically, it indicates that the explicit length defined for a field (the length specified in the data structure or DataSource) is shorter than the implicit length that the system expects based on the data type or the underlying database structure.
  For example:
  
  If a field is defined as a character type with an explicit length of 10 characters, but the underlying data type in the database or the data model expects a length of 20 characters, this error will occur.
  
  
  Solution:
  To resolve the RSDS100 error, you can