RE: WIP entries post to GL
Rlau,
The WIP you are posting is from Jobs and WIP includes Items, Resources and G/L Accounts. With that said, the WIP GL Accounts you are posting to require the Dimension Code PROFIT to be populated. I would look at the following areas to see which of the setups needs the value:
1. Job Card/Posting Fast Tab/Job Posting Group look at the WIP GL Accounts and open them. See if any GL Account has the Dimension PROFIT set for Code Mandatory.

My gut tell me one of the WIP GL Accounts has this as Code Mandatory and you can go to the Job Card/Related/Job Dimensions and set the Job to a PROFIT Dimensions.
2. Planning Lines - Look at the Items and Resources as they too might have this Dimension and normally they are setup on each Item and Dimension. Not sure how you PROFIT Dimension relates but check.
Hope this helps.
Thanks,
Steve