SAP Message AU261 - Transaction code not specified or invalid

Diagnosis
In the data record of the input file, the transaction code (fieldBALTD-TCODE) has not been transferred or an invalid value has beentransferred.

System Response
The asset cannot be created.

Procedure
Only transfer valid transaction codes in the input file. The programRAALTD11 processes the following transaction codes:
AS91 - Create Old Assets Data
AS94 - Create Old Assets Data Sub-Number
AS81 - Create Old Group Assets Data