Error (MG-144) in Material Uplaod - LSMW - RMDATIND - Last Step

I am getting Error when running the Input process (Final) step for LSMW for material upload.

Error

E MG 144 The field MARC-DISMM is defined as a required field; it does not contain an entry

Whereas Field in maintained and verified in Read Data and Converted Data Display.

System - SAP S/4HANA 1709

Transaction - LSMW

Process - Standard Batch/Direct Input

Object - 0020

Method - 0000

Program Name - RMDATIND

Program Type - D

Another unusual thing, if I use same data with less number records (10 or 20) then working fine, but if more then system shows above error for all records even ok in less record run.