How To Fix DMC_RT_MSG157 - No header row found before the nametab rows.

SAP Error Message - Details

• Message type: E = Error

• Message class: DMC_RT_MSG - DMC: Runtime Object Messages

• Message number: 157

• Message text: No header row found before the nametab rows.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DMC_RT_MSG157 - No header row found before the nametab rows. ?

  The SAP error message DMC_RT_MSG157 indicates that the system could not find a header row in the data being processed before the name table rows. This error typically occurs in the context of data migration or data import processes, particularly when using tools like SAP Data Migration Cockpit or SAP S/4HANA Migration.
  
  Cause:
  
  Missing Header Row: The most common cause is that the input file (e.g., CSV, Excel) does not contain a header row that defines the column names.
  Incorrect File Format: The file may not be formatted correctly, leading to the system's inability to recognize the header.
  Data Structure Issues: The structure of the data may not match the expected format, such as missing delimiters or incorrect data types.
  File Encoding Issues: Sometimes, the file encoding (e.g., UTF-8, ANSI) can cause issues in reading the header row.
  
  
  Solution:
  
  Check the Input File: Ensure that the input file has a header row that correctly defines the column