Creating function description: "inconsistence in description detected ..."

[Former Member]

In my own NW RFC-SDK based application, I am trying to create a RFC module description the hard way, which is to not download such a description from a SAP system, but to craft the description on-the-fly using API functions RfcCreateFunctionDesc, RfcCreateTypeDesc, RfcAddTypeField, RfcAddParameter and RfcCreateFunction. When calling RfcCreateFunction the system responds with the message

"inconsistence in description detected: non-unicode length is too small".

As far as I can tell all values I provided in the API arguments are correct, including the unicode and non-unicode lengths in the type description of a structure that is underlying the only RFC parameter in the module.

Here is what the module isi supposed to look like:

• module has only one Export parameter

• the parameter is structured

• the structure has a single field only, which is a character array of length 64 (i.e 128 bytes).

My application is unicode based. I added some code to the application to trace the API calls along with the argument values. Here is the output:

******

API RfcCreateFunctionDesc

Created function description object; returned handle: 024A1880

API RfcCreateTypeDesc

Created type description object; returned handle: 024A1A00

API RfcAddTypeField

Added Field to type description 024A1A00:

name DEST

type 0

nucLength 64

nucOffset 0

ucLength 128

ucOffset 0

decimals 0

typeDescHandle 00000000

extendedDescription 00000000

API RfcAddParameter

Added parameter to funtion description 024A1880:

name ATTRIBUTES

type 17

nucLength 64

ucLength 128

decimals 0

typeDescHandle 024A1A00

optional 0

direction 2

parameterText

defaultValue

extendedDescription 00000000

API RfcCreateFunction

Created function object from description 024A1880; returned handle: 00000000

RFC_INVALID_PARAMETER inconsistence in description detected: non-unicode length

is too small

***

Thanks so much for any help!

[Former Member]

Case closed. There was an API call missing in my code, RfcSetTypeLength, which sets the total lengths (unicode and non-unicode) of the structure after adding the structure components.Without that call the system assumes those lengths to be zero, thus the error ...