Message type: E = Error
Message class: DT - Table activation (incl. indexes)
Message number: 978
Message text: Table &: Key too wide for DB & (width: &, maximum width: &)
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DT978
- Table &: Key too wide for DB & (width: &, maximum width: &) ?The SAP error message DT978 indicates that a key in a database table is too wide for the database system to handle. This typically occurs when the combined length of the fields that make up the primary key exceeds the maximum allowed width for keys in the database.
Cause: Key Length Exceeds Limit: The primary key of the table is defined with a total length that exceeds the maximum allowed length for keys in the underlying database. Different databases have different limits on the maximum size of a key. Data Type Issues: The data types used in the key may have larger sizes than expected, especially if you are using character types (e.g., CHAR, VARCHAR) with large lengths. Table Design: The design of the table may not be optimal, leading to unnecessarily wide keys.
Solution: Review Key Definition: Check the definition of the primary key in the table. You may need to reduce the number of
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