ERROR: VK709 Activation was interrupted

Dears,

When trying to create and generate a table via V/05 transaction on SAP ECC 6.0 the following error is displayed:

Table contains 15 key fields with a total length of 138 positions. Then, I did several attempts excluding some fields and generating the table. The conclusion was that does not matter the key fields combination used, I could not use more than 11 key fields.

* SAP standard mentions that a maximum of 16 key fields per table is permitted with a total length of 255.

Someone experienced this issue? What is the potential solution without exclude fields from the key?

Thanks,

Regards,

Willy Hernández