DB_ERR_ORA_01406 SAP ABAP Runtime Error db err ora 01406

DB_ERR_ORA_01406 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.

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DB_ERR_ORA_01406 ABAP Runtime Error

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These inconsistencies between NAMETAB and the database can arise due to incorrect behaviour in the database interface, where a field has been made shorter (when reading) or longer (when writing/updating) than the maximum length defined in the NAMETAB. Data field cut off at end in selection If the error occurred in Open SQL, there is probably an inconsistency between the NAMETAB and the ABAP Data Dictionary. Compare the length specified for the fields in the NAMETAB and the ABAP Data Dictionary and contact somebody who can perform a consistency check and might be able to remove the error. This would normally be your SAP consultant. Please see internal error for more details about the possible cause of this runtime error and how it could be avoided.

The cause of this error is a selection buffer in the database interface. This buffer is shorter than the field provided by the database.
This can be caused by the length described in the NAMETAB not matching the maximum length set in the database (the length in the NAMETAB is shorter in this case). When reading a data record from the database, only part of the data field could be read. The end of the data field was cut off.